ramips: fix switch setup for Xiaomi MiWiFi Nano

MiWiFi Nano has two LAN ports, which are in reverse order. Add port numbers
to them, and disable unused ports.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>

target/linux/ramips/dts/mt7628an_xiaomi_miwifi-nano.dts

@@ -66,6 +66,11 @@
 	status = "disabled";
 };
 
+&esw {
+	mediatek,portmap = <0x2f>;
+	mediatek,portdisable = <0x2a>;
+};
+
 &wmac {
 	status = "okay";
 };

target/linux/ramips/mt76x8/base-files/etc/board.d/02_network

@@ -61,8 +61,7 @@ ramips_setup_interfaces()
 	mercury,mac1200r-v2|\
 	totolink,lr1200|\
 	wavlink,wl-wn570ha1|\
-	wavlink,wl-wn575a3|\
-	xiaomi,miwifi-nano)
+	wavlink,wl-wn575a3)
 		ucidef_add_switch "switch0" \
 			"0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "6@eth0"
 		;;
@@ -109,6 +108,10 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"4:lan:1" "2:lan:2" "0:wan" "6@eth0"
 		;;
+	xiaomi,miwifi-nano)
+		ucidef_add_switch "switch0" \
+			"0:lan:2" "2:lan:1" "4:wan" "6@eth0"
+		;;
 	zbtlink,zbt-we1226)
 		ucidef_add_switch "switch0" \
 			"0:lan:2" "1:lan:1" "4:wan" "6@eth0"