[openwrt/openwrt] airoha: support openwrt,netdev-name for renaming interfaces

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/130306fab93656865178c5a9d40a08885f9d70d6

commit 130306fab93656865178c5a9d40a08885f9d70d6
Author: Kenneth Kasilag <kenneth at kasilag.me>
AuthorDate: Mon Oct 20 22:53:09 2025 +0000

    airoha: support openwrt,netdev-name for renaming interfaces
    
    Add support to the airoha target for the OpenWrt-specific DT property
    `openwrt,netdev-name`. In particular, this is for interfaces under
    non-DSA `airoha_eth` interfaces.
    
    This will avoid conflicts with upstream code[1]; and maintain forward
    compatibility with OpenWrt configurations if/when `airoha_eth` becomes
    a full DSA driver.
    
    [1] https://lore.kernel.org/netdev/20240709124503.pubki5nwjfbedhhy@skbuf/
    
    Borrowed from d4d6c48 (mediatek: filogic: support openwrt,netdev-name for renaming interfaces)
    
    Signed-off-by: Kenneth Kasilag <kenneth at kasilag.me>
    Link: https://github.com/openwrt/openwrt/pull/20475
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 .../airoha/base-files/lib/preinit/04_set_netdev_label     | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/target/linux/airoha/base-files/lib/preinit/04_set_netdev_label b/target/linux/airoha/base-files/lib/preinit/04_set_netdev_label
new file mode 100755
index 0000000000..2042d56315
--- /dev/null
+++ b/target/linux/airoha/base-files/lib/preinit/04_set_netdev_label
@@ -0,0 +1,15 @@
+set_netdev_labels() {
+	local dir
+	local label
+	local netdev
+
+	for dir in /sys/class/net/*; do
+		[ -r "$dir/of_node/openwrt,netdev-name" ] || continue
+		read -r label < "$dir/of_node/openwrt,netdev-name"
+		netdev="${dir##*/}"
+		[ "$netdev" = "$label" ] && continue
+		ip link set "$netdev" name "$label"
+	done
+}
+
+boot_hook_add preinit_main set_netdev_labels