Add Dynamic heap support to IAR

Two new block properties available in linker configuration files:
"expanding size" and "minimum size" for IAR 8.11.2 and above

Sample:
define block HEAP with expanding size, minimum size = 16K, alignment = 8 {};

This block will expand to consume all remaining available space in
the range where it is placed. If several such blocks end up in the same
range, they will share the remaining space.
Cannot place a block with expanding size inside another block with
expanding size, inside a block with maximum size, or inside an overlay.

Author: deepikabhavnani

targets/TARGET_ARM_SSG/TARGET_BEETLE/device/TOOLCHAIN_IAR/BEETLE.icf

@@ -42,7 +42,7 @@ initialize by copy { readwrite };
 do not initialize  { section .noinit };
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
 place in ROM_region   { readonly };

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/device/TOOLCHAIN_IAR/MPS2.icf

@@ -48,7 +48,7 @@ initialize by copy { readwrite };
 do not initialize  { section .noinit };
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };
 place in ROM_region   { readonly };

targets/TARGET_Freescale/TARGET_K20XX/TARGET_K20D50M/device/TOOLCHAIN_IAR/MK20D5.icf

@@ -34,7 +34,7 @@ define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_r
 define region FlexRAM_region = mem:[from __region_FlexRAM_start__ to __region_FlexRAM_end__];
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 define region FlashConfig_region = mem:[from __FlashConfig_start__ to __FlashConfig_end__];
 

targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL05Z/device/TOOLCHAIN_IAR/MKL05Z4.icf

@@ -27,7 +27,7 @@ define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to (__FlashCon
 define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__] | mem:[from __region_RAM2_start__ to __region_RAM2_end__];
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 define region FlashConfig_region = mem:[from __FlashConfig_start__ to __FlashConfig_end__];
 

targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL25Z/device/TOOLCHAIN_IAR/MKL25Z4.icf

@@ -27,7 +27,7 @@ define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to (__FlashCon
 define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__] | mem:[from __region_RAM2_start__ to __region_RAM2_end__];
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 define region FlashConfig_region = mem:[from __FlashConfig_start__ to __FlashConfig_end__];
 

targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL26Z/device/TOOLCHAIN_IAR/MKL26Z4.icf

@@ -27,7 +27,7 @@ define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to (__FlashCon
 define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__] | mem:[from __region_RAM2_start__ to __region_RAM2_end__];
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 
 define region FlashConfig_region = mem:[from __FlashConfig_start__ to __FlashConfig_end__];
 

targets/TARGET_Freescale/TARGET_KLXX/TARGET_KL46Z/device/TOOLCHAIN_IAR/MKL46Z4.icf

@@ -27,8 +27,7 @@ define region ROM_region = mem:[from __ICFEDIT_region_ROM_start__ to (__FlashCon
 define region RAM_region = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__] | mem:[from __region_RAM2_start__ to __region_RAM2_end__];
 
 define block CSTACK    with alignment = 8, size = __ICFEDIT_size_cstack__   { };
-define block HEAP      with alignment = 8, size = __ICFEDIT_size_heap__     { };
-
+define block HEAP      with expanding size, minimum size = __ICFEDIT_size_heap__, alignment = 8     { };
 define region FlashConfig_region = mem:[from __FlashConfig_start__ to __FlashConfig_end__];
 
 initialize by copy { readwrite };

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K66F/device/TOOLCHAIN_IAR/MK66FN2M0xxx18.icf

@@ -105,7 +105,7 @@ define region CSTACK_region = mem:[from m_data_2_end-__size_cstack__+1 to m_data
 define region m_interrupts_ram_region = mem:[from m_interrupts_ram_start to m_interrupts_ram_end];
 
 define block CSTACK    with alignment = 8, size = __size_cstack__   { };
-define block HEAP      with alignment = 8, size = __size_heap__     { };
+define block HEAP      with expanding size, minimum size = __size_heap__, alignment = 8     { };
 define block RW        { readwrite };
 define block ZI        { zi };
 

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_K82F/device/TOOLCHAIN_IAR/MK82FN256xxx15.icf

@@ -105,7 +105,7 @@ define region CSTACK_region = mem:[from m_data_2_end-__size_cstack__+1 to m_data
 define region m_interrupts_ram_region = mem:[from m_interrupts_ram_start to m_interrupts_ram_end];
 
 define block CSTACK    with alignment = 8, size = __size_cstack__   { };
-define block HEAP      with alignment = 8, size = __size_heap__     { };
+define block HEAP      with expanding size, minimum size = __size_heap__, alignment = 8    { };
 define block RW        { readwrite };
 define block ZI        { zi };
 

targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_KL27Z/device/TOOLCHAIN_IAR/MKL27Z64xxx4.icf

@@ -97,7 +97,7 @@ define region CSTACK_region = mem:[from m_data_end-__size_cstack__+1 to m_data_e
 define region m_interrupts_ram_region = mem:[from m_interrupts_ram_start to m_interrupts_ram_end];
 
 define block CSTACK    with alignment = 8, size = __size_cstack__   { };
-define block HEAP      with alignment = 8, size = __size_heap__     { };
+define block HEAP      with expanding size, minimum size = __size_heap__, alignment = 8    { };
 define block RW        { readwrite };
 define block ZI        { zi };