[][kernel][common][audio][Add backport mt7986 audio driver from kernel 6.7]

[Description]
Add backport mt7986 audio driver from kernel 6.7 as Filogic audio driver.

[Release-log]
N/A

Change-Id: I1751d3672160d0997ee364121bf8815049c921e6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8265957
1 file changed