Compile usb_driver_service into fs.img.

Ubiquitous/XiZi_AIoT/services/drivers/usb/usb_service/Makefile

@@ -25,6 +25,8 @@ usb_driver_service: ${objs}
 	@echo "generate $^"
 	@${ld} ${user_ldflags} -e main -o $@ $^ ${usb_components} ${libserial} ${printf} ${libmem} ${usyscall} ${arch_usyscall} ${session} ${libipc} ${libsem} ${board_specs}
 	@${objdump} -S $@ > $@.asm
+	@mv $@ $(KERNEL_ROOT)/services/app
+	@mv $@.asm $(KERNEL_ROOT)/services/app
 
 %.o: %.c
 	@echo "cc $^"