stm32f0: add support for stm32flash tool

scripts/Makefile.stm32f0

@@ -33,6 +33,12 @@ $(OPENCM3_DIR)/lib/lib$(OPENCM3_LIBNAME).a:
 
 $(BUILD)/tbm: $(OPENCM3_DIR)/lib/lib$(OPENCM3_LIBNAME).a
 
+$(BUILD)/tbm.bin: $(BUILD)/tbm
+	$(PREFIX)objcopy -Obinary $< $@
+
+$(BUILD)/tbm.hex: $(BUILD)/tbm
+	$(PREFIX)objcopy -Oihex $< $@
+
 run: $(BUILD)/tbm
 	@echo "GDB $<"
 	@$(GDB) --batch \
@@ -40,4 +46,7 @@ run: $(BUILD)/tbm
 		-x flash.scr \
 		$<
 
+flash: $(BUILD)/tbm.bin
+	stm32flash -g 0x8000000 -w $< $(STM32_PORT)
+
 .PHONY: run