[][openwrt][common][app][Fix tools/Makefile patch fail issue]

[Description]
Fix tools/Makefile patch fail issue.
It is caused by this patch of OpenWRT.
https://github.com/openwrt/openwrt/commit/c6d3f39ecce43c4a9858157e9e2ee8718750a9ab

[Release-log]
N/A

Change-Id: Ic43797aefa75cb13c71fbab88bb0bfb7448d7c1e
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6548878
2 files changed