[][Panther debug dev]

[Description]
Add CONFIG_MAGIC_SYSRQ_SERIAL=y for magic key over serial for DUT debug

[Release-log]

Change-Id: Ic66ca5ea6a8b1dfa99f8932a666816beab1a2829
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5453444
diff --git a/target/linux/mediatek/mt7986/config-5.4 b/target/linux/mediatek/mt7986/config-5.4
index 43c7169..4deec48 100644
--- a/target/linux/mediatek/mt7986/config-5.4
+++ b/target/linux/mediatek/mt7986/config-5.4
@@ -290,6 +290,7 @@
 CONFIG_LZO_COMPRESS=y
 CONFIG_LZO_DECOMPRESS=y
 CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_SERIAL=y
 CONFIG_MD=y
 CONFIG_MDIO_BUS=y
 CONFIG_MDIO_DEVICE=y