[][kernel][common][eth][Add 1000basex AN support for the SGMII]

[Description]
Add 1000basex AN support for the SGMII.

If without this patch, some SFP Optical modules might not link up with
the link partner.

[Release-log]
N/A


Change-Id: I256726f7d5f1e7bc99f0b2293c7290352a0f3fc6
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7479629
1 file changed