[][kernel][MT7981][pinctrl][fix mt7981 GPIO9 setting]

[Description]
Change original pinctrl fix-up commit:
https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7007454

Convert patches-5.4 to file-5.4 format to prevent RDKB issue.

[Release-log]
N/A

Change-Id: Id534ae5244c7c52d2c50e468f8208ee1991421c0
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7021354
2 files changed