drivers: ethernet: stm32: Add support for SOC H7RS-Family

Add SOC_SERIES_STM32H7RSX to applicable Kconfig parameters and enable
use of .eth_stm32_desc and .eth_stm32_buf linker sections for ethernet
dma.

Signed-off-by: Thomas Decker <decker@jb-lighting.de>

Author: TD-JBL

drivers/ethernet/Kconfig.stm32_hal

@@ -26,7 +26,12 @@ choice ETH_STM32_HAL_API_VERSION
 
 config ETH_STM32_HAL_API_V2
 	bool "Use official STM32Cube HAL driver"
-	depends on SOC_SERIES_STM32H7X || SOC_SERIES_STM32H5X || SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X || SOC_SERIES_STM32N6X
+	depends on SOC_SERIES_STM32F4X \
+		   || SOC_SERIES_STM32F7X \
+		   || SOC_SERIES_STM32H5X \
+		   || SOC_SERIES_STM32H7X \
+		   || SOC_SERIES_STM32H7RSX \
+		   || SOC_SERIES_STM32N6X
 	select USE_STM32_HAL_ETH_EX if SOC_SERIES_STM32N6X
 	help
 	  Use the official STM32Cube HAL driver instead of the legacy one.
@@ -86,7 +91,7 @@ menuconfig PTP_CLOCK_STM32_HAL
 	default y
 	depends on PTP_CLOCK || NET_L2_PTP
 	depends on ETH_STM32_HAL_API_V2
-	depends on SOC_SERIES_STM32F7X || SOC_SERIES_STM32H7X || SOC_SERIES_STM32H5X
+	depends on SOC_SERIES_STM32F7X || SOC_SERIES_STM32H7X || SOC_SERIES_STM32H7RSX || SOC_SERIES_STM32H5X
 	help
 	  Enable STM32 PTP clock support.
 

drivers/ethernet/eth_stm32_hal_priv.h

@@ -33,7 +33,7 @@ extern const struct device *eth_stm32_phy_dev;
 	    DT_NODE_HAS_STATUS_OKAY(DT_CHOSEN(zephyr_dtcm))
 #define __eth_stm32_desc __dtcm_noinit_section
 #define __eth_stm32_buf  __dtcm_noinit_section
-#elif defined(CONFIG_SOC_SERIES_STM32H7X)
+#elif defined(CONFIG_SOC_SERIES_STM32H7X) || defined(CONFIG_SOC_SERIES_STM32H7RSX)
 #define __eth_stm32_desc __attribute__((section(".eth_stm32_desc")))
 #define __eth_stm32_buf  __attribute__((section(".eth_stm32_buf")))
 #elif defined(CONFIG_NOCACHE_MEMORY)