ramips: improve support for WeVO 11AC NAS and W2914NS v2

- remove WAN port index
- load WAN MAC address directly from the flash
- provide label MAC address
- increase flash's SPI frequency to 80MHz
- add mt76 led nodes to make WiFi LEDs work
- drop unnecessary pinmux groups

The factory partition scheme for MAC addresses (verified on both devices):
0x4   : WiFi 2.4GHz (label_mac-9)
0x28  : unused
0x2e  : WAN (label_mac)
0x8004: WiFi 5GHz (label_mac-5)
0xe000: LAN (label_mac-1)
0xe006: unused

By improving flash speed,
`time dd if=/dev/mtdblock3 of=/dev/null bs=64k`
has been reduced from 14.51s to 3.11s.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
[rebased]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

target/linux/ramips/dts/mt7621_wevo_w2914ns-v2.dtsi

@@ -34,10 +34,11 @@
 &spi0 {
 	status = "okay";
 
-	m25p80@0 {
+	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+		spi-max-frequency = <80000000>;
+		m25p,fast-read;
 
 		partitions {
 			compatible = "fixed-partitions";
@@ -77,18 +78,28 @@
 
 &pcie0 {
 	wifi@0,0 {
-		compatible = "pci14c3,7603";
+		compatible = "mediatek,mt76";
 		reg = <0x0000 0 0 0 0>;
 		mediatek,mtd-eeprom = <&factory 0x0000>;
+
+		led {
+			led-sources = <0>;
+			led-active-low;
+		};
 	};
 };
 
 &pcie1 {
 	wifi@0,0 {
-		compatible = "pci14c3,7662";
+		compatible = "mediatek,mt76";
 		reg = <0x0000 0 0 0 0>;
 		mediatek,mtd-eeprom = <&factory 0x8000>;
 		ieee80211-freq-limit = <5000000 6000000>;
+
+		led {
+			led-sources = <2>;
+			led-active-low;
+		};
 	};
 };
 
@@ -99,7 +110,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "wdt", "rgmii2", "jtag", "mdio";
+			ralink,group = "wdt", "rgmii2";
 			ralink,function = "gpio";
 		};
 	};

target/linux/ramips/mt7621/base-files/etc/board.d/02_network

@@ -69,9 +69,7 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0:lan:1" "1:lan:2" "2:lan:3" "3:lan:4" "4:wan:5" "6@eth0"
 		;;
-	d-team,newifi-d2|\
-	wevo,11acnas|\
-	wevo,w2914ns-v2)
+	d-team,newifi-d2)
 		ucidef_add_switch "switch0" \
 			"0:lan:4" "1:lan:3" "2:lan:2" "3:lan:1" "4:wan:5" "6@eth0"
 		;;
@@ -113,7 +111,9 @@ ramips_setup_interfaces()
 	netgear,r6350|\
 	netgear,r6850|\
 	netgear,wndr3700-v5|\
-	netis,wf-2881)
+	netis,wf-2881|\
+	wevo,11acnas|\
+	wevo,w2914ns-v2)
 		ucidef_add_switch "switch0" \
 			"0:lan:4" "1:lan:3" "2:lan:2" "3:lan:1" "4:wan" "6@eth0"
 		;;
@@ -164,8 +164,6 @@ ramips_setup_macs()
 	ubiquiti,edgerouterx-sfp|\
 	unielec,u7621-06-16m|\
 	unielec,u7621-06-64m|\
-	wevo,11acnas|\
-	wevo,w2914ns-v2|\
 	xiaoyu,xy-c5|\
 	xzwifi,creativebox-v1|\
 	zbtlink,zbt-wg2626)
@@ -225,6 +223,11 @@ ramips_setup_macs()
 	netgear,r6850)
 		wan_mac=$(macaddr_add "$(cat /sys/class/net/eth0/address)" 2)
 		;;
+	wevo,11acnas|\
+	wevo,w2914ns-v2)
+		wan_mac=$(mtd_get_mac_binary factory 0x2e)
+		label_mac=$wan_mac
+		;;
 	xiaomi,mir3g)
 		lan_mac=$(mtd_get_mac_binary factory 0xe006)
 		;;