[] [mt7981: remove emmc/sd clk in bringup node]

[Description]
Remove emmc/sd clock default on

[Release-log]
N/A

Change-Id: I10d0f778ee4a12ce5d935719932d709f5e4bfb2a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5396210
1 file changed