tools: gpio: rm .*.cmd on make clean

rm .*.cmd when calling make clean
Signed-off-by: zhangjiao <zhangjiao2@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20240829062942.11487-1-zhangjiao2@cmss.chinamobile.comSigned-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

tools/gpio/Makefile

@@ -78,7 +78,7 @@ $(OUTPUT)gpio-watch: $(GPIO_WATCH_IN)
 clean:
 	rm -f $(ALL_PROGRAMS)
 	rm -f $(OUTPUT)include/linux/gpio.h
-	find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
+	find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete -o -name '\.*.cmd' -delete
 
 install: $(ALL_PROGRAMS)
 	install -d -m 755 $(DESTDIR)$(bindir);		\