[][kernel][common][audio][Refactor mt7986 audio driver backport patch path]

[Description]
Refactor mt7986 audio driver backport patch path from backport-5.4
to patch-5.4.

[Release-log]
N/A

Change-Id: I756efb6c1f2cde1c0cdf567664bc8c64c3ea9f74
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8285788
1 file changed