[][kernel][mt7988][misc][add infra bus hang protect driver]

[Description]
Add infra bus hang protect driver to fix pwm problem

[Release-log]
N/A

Change-Id: I2b9176253c9e2b4ab11672961399d5a0c5d447d5
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6717598
3 files changed