net: ethernet: mtk_eth_soc: use WO firmware for MT7981

In order to support wireless offloading on MT7981 we need to load the
appropriate firmware. Recognize MT7981 and load mt7981_wo.bin.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/mtk_wed_mcu.c

@@ -326,7 +326,11 @@ mtk_wed_mcu_load_firmware(struct mtk_wed_wo *wo)
 		wo->hw->index + 1);
 
 	/* load firmware */
+	if (of_device_is_compatible(wo->hw->node, "mediatek,mt7981-wed"))
+		fw_name = MT7981_FIRMWARE_WO;
+	else
 		fw_name = wo->hw->index ? MT7986_FIRMWARE_WO1 : MT7986_FIRMWARE_WO0;
+
 	ret = request_firmware(&fw, fw_name, wo->hw->dev);
 	if (ret)
 		return ret;
@@ -386,5 +390,6 @@ int mtk_wed_mcu_init(struct mtk_wed_wo *wo)
 				  100, MTK_FW_DL_TIMEOUT);
 }
 
+MODULE_FIRMWARE(MT7981_FIRMWARE_WO);
 MODULE_FIRMWARE(MT7986_FIRMWARE_WO0);
 MODULE_FIRMWARE(MT7986_FIRMWARE_WO1);

drivers/net/ethernet/mediatek/mtk_wed_wo.h

@@ -88,6 +88,7 @@ enum mtk_wed_dummy_cr_idx {
 	MTK_WED_DUMMY_CR_WO_STATUS,
 };
 
+#define MT7981_FIRMWARE_WO	"mediatek/mt7981_wo.bin"
 #define MT7986_FIRMWARE_WO0	"mediatek/mt7986_wo_0.bin"
 #define MT7986_FIRMWARE_WO1	"mediatek/mt7986_wo_1.bin"