[][Change mt7981 mtk hwrng default disabled]

[Description]
Change nt7981 mtk hwrng default disabled

[Release-log]
N/A

Change-Id: I10125eaff7f072020d31830b31d8d1caf155887c
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5483291
1 file changed