ipq806x: migrate wifi configuration device paths for 6.12 kernel

The device tree PCIe host node names have been changed in the new
6.12 kernel[1]. Hence we have to update the wifi device path to
make sure it can work properly.

This script is based on:
target/linux/qualcommax/ipq807x/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.12.y&id=07299ba2e7d98045e6b522f7c5b97f402b15bc82
Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18989
(cherry picked from commit ae70dbc26787497e25faa8d67b5944b7bb9023e4)

Backport the migration script that can also work backward, migrating
from 6.12 to 6.6. Like going from main/master to stable 24.10.
Signed-off-by: Hannu Nyman <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20739
Signed-off-by: Christian Marangi <[email protected]>

target/linux/ipq806x/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate

@@ -0,0 +1,47 @@
+#!/bin/sh
+
+# This must run before 10-wifi-detect
+
+[ "${ACTION}" = "add" ] || return
+
+. /lib/functions.sh
+. /lib/functions/system.sh
+
+do_migrate_radio()
+{
+	local config="$1"
+
+	config_get from "$config" path
+
+	to=${from/pci\//pcie\/}
+
+	# Checks if kernel version is less than 6.12.0, if it is and the path is
+	# using the new format, then path should be migrated to the old format.
+	[ "$(get_linux_version)" -lt "612000" ] && to=${from/pcie\//pci\/}
+
+	[ "$from" = "$to" ] && return
+
+	uci set "wireless.${config}.path=${to}"
+	WIRELESS_CHANGED=true
+
+	logger -t wifi-migrate "Updated path of wireless.${config} from '${from}' to '${to}'"
+}
+
+migrate_radio()
+{
+	config_load wireless
+
+	config_foreach do_migrate_radio wifi-device
+}
+
+WIRELESS_CHANGED=false
+
+case "$(board_name)" in
+*)
+	migrate_radio
+	;;
+esac
+
+$WIRELESS_CHANGED && uci commit wireless
+
+exit 0