Update radxa-e54c.conf - fix netplan ethenet wan port.

The Radxa E54C exposes interfaces lan1, lan2, lan3 and wan.   The Armbian netplan config uses a match pattern "wan[0-9]*" which does not match the bare interface name "wan" so replace with "wan" if the 10-dhcp-all-interfaces.yaml file exists (only in netplan builds).

Author: schwar3kat

config/boards/radxa-e54c.conf

@@ -61,7 +61,7 @@ function post_family_tweaks_bsp__radxa_e54c_enable_leds() {
 		invert=0
 	EOF
 
-        # Internal Ethernet interface can't get an IP address and shouldn't be managed by NetworkManager so make it unmanaged.
+    # Internal Ethernet interface can't get an IP address and shouldn't be managed by NetworkManager so make it unmanaged.
 	display_alert "$BOARD" "Creating Board Support Internal Switch Config" "info"
 	cat <<- EOF > "${destination}"/etc/NetworkManager/conf.d/99-unmanaged-devices.conf
 	[main]
@@ -72,3 +72,12 @@ function post_family_tweaks_bsp__radxa_e54c_enable_leds() {
 	EOF
 
 }
+
+function post_post_debootstrap_tweaks__radxa_e54c_wan_fix() {
+    # Only apply to images with 10-dhcp-all-interfaces.yaml present
+	[[ -e "${SDCARD}/etc/netplan/10-dhcp-all-interfaces.yaml" ]] || return 0
+
+    # Boards ethernet interfaces are lan1, lan2, lan3 and wan
+    # wan is not detected by pattern "wan[0-9]*" so replace with "wan" if it exists (only in netplan builds)
+    sed -i 's/wan\[0-9\]\*/wan/g' ${SDCARD}/etc/netplan/10-dhcp-all-interfaces.yaml
+}