soc: stm32h7: define rom offset when using mcuboot

Set rom offset to 0x400 if application is compiled with
CONFIG_BOOTLOADER_MCUBOOT.
Please note that mcuboot is not yet supported on stm32h7 devices

Signed-off-by: Nicolas VINCENT <[email protected]>

Author: nvincent-vossloh

soc/arm/st_stm32/stm32h7/Kconfig.defconfig.series

@@ -16,6 +16,10 @@ config DMA_STM32_V1
 	default y
 	depends on DMA_STM32
 
+config ROM_START_OFFSET
+	default 0x400 if BOOTLOADER_MCUBOOT
+	default 0x0   if !BOOTLOADER_MCUBOOT
+
 if ENTROPY_GENERATOR
 
 config ENTROPY_STM32_RNG