net: ethernet: mediatek: Add MT7628/88 SoC support

This patch adds support for the MediaTek MT7628/88 SoCs to the common
MediaTek ethernet driver. Some minor changes are needed for this and
a bigger change, as the MT7628 does not support QDMA (only PDMA).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: René van Dorst <opensource@vdorst.com>
Cc: Daniel Golle <daniel@makrotopia.org>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/Kconfig

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config NET_VENDOR_MEDIATEK
 	bool "MediaTek ethernet driver"
-	depends on ARCH_MEDIATEK || SOC_MT7621
+	depends on ARCH_MEDIATEK || SOC_MT7621 || SOC_MT7620
 	---help---
 	  If you have a Mediatek SoC with ethernet, say Y.
 

drivers/net/ethernet/mediatek/mtk_eth_path.c

@@ -315,6 +315,10 @@ int mtk_setup_hw_path(struct mtk_eth *eth, int mac_id, int phymode)
 {
 	int err;
 
+	/* No mux'ing for MT7628/88 */
+	if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
+		return 0;
+
 	switch (phymode) {
 	case PHY_INTERFACE_MODE_TRGMII:
 	case PHY_INTERFACE_MODE_RGMII_TXID: