[][Change mt7981 eip97 and audio to enable clock by its own dts node]

[Description]
Change mt7981 eip97 and audio to enable clock by its own dts node

[Release-log]
Pass tcrypt tests for EIP-97 and external loopback for SLIC

Change-Id: I6ff4a46767f0e763245c59ede3cca544f737eb79
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5324274
3 files changed