Add Makefile.lufa to keyboard/hhkb and hbkb.

rules.mk

@@ -416,6 +416,10 @@ dfu: $(TARGET).hex
 	dfu-programmer $(MCU) erase
 	dfu-programmer $(MCU) flash $(TARGET).hex
 	dfu-programmer $(MCU) reset
+	
+dfu-start:
+	dfu-programmer $(MCU) reset
+	dfu-programmer $(MCU) start
 
 flip-ee: $(TARGET).hex $(TARGET).eep
 	$(COPY) $(TARGET).eep $(TARGET)eep.hex
@@ -599,4 +603,4 @@ $(shell mkdir $(OBJDIR) 2>/dev/null)
 .PHONY : all begin finish end sizebefore sizeafter gccversion \
 build elf hex eep lss sym coff extcoff \
 clean clean_list debug gdb-config show_path \
-program teensy dfu flip dfu-ee flip-ee
+program teensy dfu flip dfu-ee flip-ee dfu-start