[][Enable PCIe PHY for mt7986]

[Description]
Add PCIe PHY for mt7986.

[Release-log]
N/A

Change-Id: I0b065ff71ce325bfabc942f0e033111522784047
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5456938
1 file changed