base-files: add migration script for the wireless

Since OpenWrt 25.12.0 release some /etc/config/wireless options were
renamed. For example:
'priv_key' -> 'private_key'
'priv_key_pwd' -> 'private_key_passwd'

This commit adds hotplug script that runs migration ucode script.

Fixes: openwrt#22599
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>

Author: csharper2005

package/base-files/files/etc/hotplug.d/ieee80211/06-wifi-migrate

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+[ "${ACTION}" = "add" ] || return
+
+/usr/bin/ucode /usr/share/ucode/wifi/migrate.uc