add tinyusb

tinyusb/hw/bsp/frdm_kl25z/board.mk

@@ -0,0 +1,46 @@
+SDK_DIR = hw/mcu/nxp/nxp_sdk
+DEPS_SUBMODULES += $(SDK_DIR)
+
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m0plus \
+  -DCPU_MKL25Z128VLK4 \
+  -DCFG_TUSB_MCU=OPT_MCU_MKL25ZXX
+
+# mcu driver cause following warnings
+CFLAGS += -Wno-error=unused-parameter
+
+MCU_DIR = $(SDK_DIR)/devices/MKL25Z4
+
+# All source paths should be relative to the top level.
+LD_FILE = $(MCU_DIR)/gcc/MKL25Z128xxx4_flash.ld
+
+SRC_C += \
+	src/portable/nxp/khci/dcd_khci.c \
+	$(MCU_DIR)/system_MKL25Z4.c \
+	$(MCU_DIR)/project_template/clock_config.c \
+	$(MCU_DIR)/drivers/fsl_clock.c \
+	$(MCU_DIR)/drivers/fsl_gpio.c \
+	$(MCU_DIR)/drivers/fsl_lpsci.c
+
+INC += \
+	$(TOP)/hw/bsp/$(BOARD) \
+	$(TOP)/$(SDK_DIR)/CMSIS/Include \
+	$(TOP)/$(MCU_DIR) \
+	$(TOP)/$(MCU_DIR)/drivers \
+	$(TOP)/$(MCU_DIR)/project_template \
+
+SRC_S += $(MCU_DIR)/gcc/startup_MKL25Z4.S
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM0
+
+# For flash-jlink target
+JLINK_DEVICE = MKL25Z128xxx4
+
+# For flash-pyocd target
+PYOCD_TARGET = mkl25zl128
+
+# flash using pyocd
+flash: flash-pyocd