[][kernel][pinctrl][Upgrade mt7988 pinconf setting using combo]

[Description]
Fix mt7988 pinctrl pinconf setting fail issue.
1. pinctrl-mt7988.c is special because there's a new pull type
named MTK_PULL_PD_TYPE, hence it still needs another commit different
from backport one for customized this kind of pin conf setting.

[Release-log]


Change-Id: I8f1a414b486a5d3afe41f55b339477be6dea8ad3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7833100
2 files changed