[][arm64: defconfig: mt7981: turn on nvmem driver support 2/5]

[Description]
Add nvmem driver support for efuse

[Release-log]
N/A

Change-Id: I7ce0d5b1cce1c55ddb22c2c8ff2b7854d16d141a
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5579215
1 file changed