fix iar make build with wb and u5

hw/bsp/stm32wb/family.mk

@@ -9,14 +9,12 @@ include $(TOP)/$(BOARD_PATH)/board.mk
 CPU_CORE ?= cortex-m4
 
 CFLAGS += \
-  -flto \
-  -nostdlib -nostartfiles \
   -DCFG_TUSB_MCU=OPT_MCU_STM32WB
 
-# suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-align -Wno-unused-parameter
-
-LD_FILE ?= ${ST_CMSIS}/Source/Templates/gcc/linker/${MCU_VARIANT}_flash_cm4.ld
+CFLAGS_GCC += \
+  -flto \
+  -nostdlib -nostartfiles \
+	-Wno-error=cast-align -Wno-unused-parameter
 
 LDFLAGS_GCC += -specs=nosys.specs -specs=nano.specs
 
@@ -25,19 +23,26 @@ SRC_C += \
 	$(ST_CMSIS)/Source/Templates/system_${ST_PREFIX}.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_cortex.c \
+	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_pwr.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_pwr_ex.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_rcc.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_rcc_ex.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_uart.c \
 	$(ST_HAL_DRIVER)/Src/${ST_PREFIX}_hal_gpio.c
 
-SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_${MCU_VARIANT}_cm4.s
-
 INC += \
 	$(TOP)/$(BOARD_PATH) \
 	$(TOP)/lib/CMSIS_5/CMSIS/Core/Include \
 	$(TOP)/$(ST_CMSIS)/Include \
 	$(TOP)/$(ST_HAL_DRIVER)/Inc
 
+# Startup
+SRC_S_GCC += $(ST_CMSIS)/Source/Templates/gcc/startup_$(MCU_VARIANT)_cm4.s
+SRC_S_IAR += $(ST_CMSIS)/Source/Templates/iar/startup_$(MCU_VARIANT)_cm4.s
+
+# Linker
+LD_FILE_GCC ?= ${ST_CMSIS}/Source/Templates/gcc/linker/${MCU_VARIANT}_flash_cm4.ld
+LD_FILE_IAR ?= $(ST_CMSIS)/Source/Templates/iar/linker/$(MCU_VARIANT)_flash_cm4.icf
+
 # flash target using on-board stlink
 flash: flash-stlink