[][Add mt7531 cl45 phy access capability to switch command]

[Description]
Add mt7531 cl45 phy access capability to switch command via ioctl.

[Release-log]
N/A

Change-Id: I7c9b0c01acbc11b471adff6e29f6e2f6b2767d78
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4590345
2 files changed