base-files: config_generate: split macaddr with multiple ifaces

netifd does not handle network.@device[x].name properly if it
contains multiple ifaces separated by spaces. Due to this, board.d
lan_mac setup does not work if multiple ifaces are set to LAN by
ucidef_set_interface_lan.

To fix this, create a device node for each member iface when
running config_generate instead. Those are named based on the
member ifname:

  ucidef_set_interface_lan "eth0 eth1.1"
  ucidef_set_interface_macaddr "lan" "yy:yy:yy:yy:yy:01"

will return

  config device 'lan_eth0_dev'
        option name 'eth0'
        option macaddr 'yy:yy:yy:yy:yy:01'

  config device 'lan_eth1_1_dev'
        option name 'eth1.1'
        option macaddr 'yy:yy:yy:yy:yy:01'

ref: https://github.com/openwrt/openwrt/pull/2542

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
[always use new scheme, extend description, change commit title]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
(cherry picked from commit 298814e6be7640d89328de9e7c90d4349e30683f)

package/base-files/Makefile

@@ -12,7 +12,7 @@ include $(INCLUDE_DIR)/version.mk
 include $(INCLUDE_DIR)/feeds.mk
 
 PKG_NAME:=base-files
-PKG_RELEASE:=204
+PKG_RELEASE:=204.1
 PKG_FLAGS:=nonshared
 
 PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/

package/base-files/files/bin/config_generate

@@ -85,12 +85,16 @@ generate_network() {
 		set network.$1.proto='none'
 	EOF
 
-	[ -n "$macaddr" ] && uci -q batch <<-EOF
-		delete network.$1_dev
-		set network.$1_dev='device'
-		set network.$1_dev.name='$ifname'
-		set network.$1_dev.macaddr='$macaddr'
-	EOF
+	if [ -n "$macaddr" ]; then
+		for name in $ifname; do
+			uci -q batch <<-EOF
+				delete network.$1_${name/./_}_dev
+				set network.$1_${name/./_}_dev='device'
+				set network.$1_${name/./_}_dev.name='$name'
+				set network.$1_${name/./_}_dev.macaddr='$macaddr'
+			EOF
+		done
+	fi
 
 	case "$protocol" in
 		static)