more CPU_CORE

hw/bsp/kinetis_kl/family.mk

@@ -3,11 +3,9 @@ DEPS_SUBMODULES += $(SDK_DIR) lib/CMSIS_5
 
 MCU_DIR = $(SDK_DIR)/devices/$(MCU)
 include $(TOP)/$(BOARD_PATH)/board.mk
+CPU_CORE ?= cortex-m0plus
 
 CFLAGS += \
-  -mthumb \
-  -mabi=aapcs \
-  -mcpu=cortex-m0plus \
   -DCFG_TUSB_MCU=OPT_MCU_KINETIS_KL \
 
 LDFLAGS += \
@@ -34,6 +32,3 @@ INC += \
 	$(TOP)/$(SDK_DIR)/drivers/port \
 	$(TOP)/$(SDK_DIR)/drivers/smc \
 	$(TOP)/$(SDK_DIR)/drivers/uart \
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0