[][kernel][mt7981][eth][Disable CONFIG_MEDIATEK_NETSYS_v3 by default]

[Description]
Add a config to disable CONFIG_MEDIATEK_NETSYS_V3.

[Release-log]
N/A


Change-Id: Ie66daa16ec8158e9e3f6519848e082feebec2e51
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6614483
Build: srv_hbgsm110
1 file changed