[][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
diff --git a/target/linux/mediatek/mt7981/config-5.4 b/target/linux/mediatek/mt7981/config-5.4
index 5134690..1663f2f 100644
--- a/target/linux/mediatek/mt7981/config-5.4
+++ b/target/linux/mediatek/mt7981/config-5.4
@@ -463,3 +463,5 @@
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_ZLIB_INFLATE=y
 CONFIG_ZONE_DMA32=y
+CONFIG_NVMEM=y
+CONFIG_MTK_EFUSE=y