Import STM32N6 CMSIS v1.2.0 and HAL v1.2.0 at 02-Jul-2025.

This updates the N6 CMSIS and HAL code to the latest available.

Sources:
- https://github.com/STMicroelectronics/cmsis-device-n6.git at v1.2.0
- https://github.com/STMicroelectronics/stm32n6xx-hal-driver.git at v1.2.0

Signed-off-by: Damien George <damien@micropython.org>

Author: dpgeorge

CMSIS/STM32N6xx/Include/stm32n645xx.h

@@ -65,7 +65,7 @@ extern "C" {
   * @brief CMSIS Device version number
   */
 #define __STM32N6_CMSIS_VERSION_MAIN   (0x01U) /*!< [31:24] main version */
-#define __STM32N6_CMSIS_VERSION_SUB1   (0x01U) /*!< [23:16] sub1 version */
+#define __STM32N6_CMSIS_VERSION_SUB1   (0x02U) /*!< [23:16] sub1 version */
 #define __STM32N6_CMSIS_VERSION_SUB2   (0x00U) /*!< [15:8]  sub2 version */
 #define __STM32N6_CMSIS_VERSION_RC     (0x00U) /*!< [7:0]  release candidate */
 #define __STM32N6_CMSIS_VERSION        ((__STM32N6_CMSIS_VERSION_MAIN << 24U)\

CMSIS/STM32N6xx/Include/stm32n647xx.h

@@ -421,7 +421,7 @@ g_pfnVectors:
     .weak   RTC_IRQHandler
     .thumb_set RTC_IRQHandler,Default_Handler
 
-    .weak   IWDF_IRQHandler
+    .weak   IWDG_IRQHandler
     .thumb_set IWDG_IRQHandler,Default_Handler
 
     .weak   WWDG_IRQHandler

CMSIS/STM32N6xx/Include/stm32n655xx.h

@@ -422,7 +422,7 @@ g_pfnVectors:
     .weak   RTC_IRQHandler
     .thumb_set RTC_IRQHandler,Default_Handler
 
-    .weak   IWDF_IRQHandler
+    .weak   IWDG_IRQHandler
     .thumb_set IWDG_IRQHandler,Default_Handler
 
     .weak   WWDG_IRQHandler

CMSIS/STM32N6xx/Include/stm32n657xx.h

@@ -421,7 +421,7 @@ g_pfnVectors:
     .weak   RTC_IRQHandler
     .thumb_set RTC_IRQHandler,Default_Handler
 
-    .weak   IWDF_IRQHandler
+    .weak   IWDG_IRQHandler
     .thumb_set IWDG_IRQHandler,Default_Handler
 
     .weak   WWDG_IRQHandler

CMSIS/STM32N6xx/Include/stm32n6xx.h

@@ -422,7 +422,7 @@ g_pfnVectors:
     .weak   RTC_IRQHandler
     .thumb_set RTC_IRQHandler,Default_Handler
 
-    .weak   IWDF_IRQHandler
+    .weak   IWDG_IRQHandler
     .thumb_set IWDG_IRQHandler,Default_Handler
 
     .weak   WWDG_IRQHandler

CMSIS/STM32N6xx/Source/Templates/gcc/startup_stm32n645xx.s

@@ -421,7 +421,7 @@ g_pfnVectors:
     .weak   RTC_IRQHandler
     .thumb_set RTC_IRQHandler,Default_Handler
 
-    .weak   IWDF_IRQHandler
+    .weak   IWDG_IRQHandler
     .thumb_set IWDG_IRQHandler,Default_Handler
 
     .weak   WWDG_IRQHandler