增加ota文件系统编译方法；（注意每次swupdate_make_recovery_img需要删除根目录和./lichee/linux下的.config和.config.old）

target/allwinner/v851s3-fastboot_sl100_front/swupdate/sw-subimgs.cfg

@@ -1,8 +1,8 @@
 swota_file_list=(
 ${TINA_BUILD_TOP=}/target/allwinner/${TARGET_BOARD}/swupdate/sw-description
 out/${TARGET_BOARD}/boot_initramfs_recovery.img:recovery
-out/${TARGET_BOARD}/uboot.img:uboot
-out/${TARGET_BOARD}/boot0.img:boot0
+#out/${TARGET_BOARD}/uboot.img:uboot
+#out/${TARGET_BOARD}/boot0.img:boot0
 out/${TARGET_BOARD}/boot.img:kernel
 out/${TARGET_BOARD}/rootfs.img:rootfs
 out/${TARGET_BOARD}/usr.img:usr