[][kernel][mt7988][pinctrl][fix mt7988 pwm pins]

[Description]
Remove unavaliable pwm pins and change to the correct pwm pins

[Release-log]
N/A

Change-Id: I75f566240ce6f0d8d9729de998f07e2bcba378d3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6696321
1 file changed