rename bsp of stm32 board

hw/bsp/stm32f407disco/board.mk

@@ -0,0 +1,41 @@
+CFLAGS += \
+  -DHSE_VALUE=8000000 \
+  -DSTM32F407xx \
+  -mthumb \
+  -mabi=aapcs-linux \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -nostdlib -nostartfiles \
+  -DCFG_TUSB_MCU=OPT_MCU_STM32F4
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/stm32f407disco/STM32F407VGTx_FLASH.ld
+
+SRC_C += \
+	hw/mcu/st/system-init/system_stm32f4xx.c
+
+SRC_S += \
+	hw/mcu/st/startup/stm32f4/startup_stm32f407xx.s
+
+INC += \
+	$(TOP)/hw/mcu/st/stm32lib/CMSIS/STM32F4xx/Include \
+	$(TOP)/hw/mcu/st/cmsis
+
+# For TinyUSB port source
+VENDOR = st
+CHIP_FAMILY = stm32f4
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM4F
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f407vg
+JLINK_IF = swd
+
+# Path to STM32 Cube Programmer CLI, should be added into system path 
+STM32Prog = STM32_Programmer_CLI
+
+# flash target using on-board stlink
+flash: $(BUILD)/$(BOARD)-firmware.elf
+	$(STM32Prog) --connect port=swd --write $< --go