base-files: allow setting device and bridge macs

Add code for setting mac addresses inside board.json and rendering
them out to uci. On switches we want to have a unique MAC on each port.
With 48 port switches that would require 48 device sections in
/etc/config/network. Doing so via board.json is easier.

Signed-off-by: John Crispin <john@phrozen.org>

package/base-files/files/lib/functions/uci-defaults.sh

@@ -91,7 +91,23 @@ ucidef_set_interfaces_lan_wan() {
 }
 
 ucidef_set_bridge_device() {
-	json_add_string bridge "${1:switch0}"
+	json_select_object bridge
+	json_add_string name "${1:switch0}"
+	json_select ..
+}
+
+ucidef_set_bridge_mac() {
+	json_select_object bridge
+	json_add_string macaddr "${1}"
+	json_select ..
+}
+
+ucidef_set_network_device_mac() {
+	json_select_object "network-device"
+	json_select_object "${1}"
+	json_add_string macaddr "${2}"
+	json_select ..
+	json_select ..
 }
 
 _ucidef_add_switch_port() {