[][Fix mt7981 patch file name typo]

[Description]
Fix mt7981 patch file name typo

[Release-log]
N/A

Change-Id: Iebcc9acd29d6e53aa286776a7990f74fe4481db7
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5184622
diff --git a/target/linux/mediatek/patches-5.4/0002-clk-mtk-add-mt7981-support .patch b/target/linux/mediatek/patches-5.4/0002-clk-mtk-add-mt7981-support.patch
similarity index 100%
rename from target/linux/mediatek/patches-5.4/0002-clk-mtk-add-mt7981-support .patch
rename to target/linux/mediatek/patches-5.4/0002-clk-mtk-add-mt7981-support.patch