ramips: add support for Cudy M1800

Specifications

  SoC:       MT7621
  CPU:       880 MHz
  Flash:     32 MiB
  RAM:       256 MiB
  WLAN:      MT7915 WiFi 6 (2.4/5 GHz)
  Ethernet:  2x Gbit ports

                  MAC
LAN        b4:4b:d6:2e:c7:b0 (label)
WAN        b4:4b:d6:2e:c7:b1
WiFi 2.4   00:0c:43:26:46:08
WiFi 5     00:0c:43:26:59:97

Installation

There are two known options:
1) The Luci-based UI.
2) Press and hold the reset button during power up.
   The router will request 'recovery.bin' from a TFTP server at
   192.168.1.88.

Both options require a signed firmware binary.
The openwrt image supplied by cudy is signed and can be used to
install unsigned images.

Signed-off-by: Leon M. Busch-George <leon@georgemail.eu>

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

@@ -78,6 +78,11 @@ ramips_setup_interfaces()
 		uci add_list firewall.@zone[1].network='eth_data'
 		uci add_list firewall.@zone[1].network='eth_om'
 		;;
+	cudy,m1800|\
+	yuncore,ax820|\
+	zyxel,nt7101)
+		ucidef_set_interfaces_lan_wan "lan" "wan"
+		;;
 	gnubee,gb-pc1)
 		ucidef_set_interface_lan "ethblack ethblue"
 		;;
@@ -117,10 +122,6 @@ ramips_setup_interfaces()
 	ubnt,usw-flex)
 		ucidef_set_interface_lan "lan1 lan2 lan3 lan4 lan5"
 		;;
-	yuncore,ax820|\
-	zyxel,nr7101)
-		ucidef_set_interfaces_lan_wan "lan" "wan"
-		;;
 	zyxel,wap6805)
 		ucidef_set_interface_lan "lan1 lan2 lan3 lan4"
 		ucidef_set_interface "qtn" ifname "eth1" protocol "static" ipaddr "1.1.1.1" netmask "255.255.255.0"