[][kernel][common][eth][Add phylink_pcs support for the SGMII/USXGMII]

[Description]
Add phylink_pcs support for the SGMII/USXGMII.

If without this patch, phylink framework cannot configure MAC and PCS
properly for the inband mode.

[Release-log]
N/A


Change-Id: I6cda355eeb2abb3c90a9120f3b77b3721200dc81
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7353960
diff --git a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_reset.c b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_reset.c
index f246e85..eebec74 100644
--- a/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_reset.c
+++ b/target/linux/mediatek/files-5.4/drivers/net/ethernet/mediatek/mtk_eth_reset.c
@@ -209,9 +209,9 @@
 	if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V3)) {
 		mtk_dump_reg(eth, "XGMAC0", 0x12000, 0x300);
 		mtk_dump_reg(eth, "XGMAC1", 0x13000, 0x300);
-		mtk_dump_usxgmii(eth->xgmii->regmap_usxgmii[0],
+		mtk_dump_usxgmii(eth->usxgmii->pcs[0].regmap,
 			"USXGMII0", 0, 0x1000);
-		mtk_dump_usxgmii(eth->xgmii->regmap_usxgmii[1],
+		mtk_dump_usxgmii(eth->usxgmii->pcs[1].regmap,
 			"USXGMII1", 0, 0x1000);
 	}
 }