rtl8812au-ct: fix build with mac80211 6.9.9 backport

The change_beacon() API has been updated since the 6.7 kernel. Ref:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.9.9&id=66f85d57b7109baf8a7d5ee04049ac9412611d35

Fix build error:
../rtl8812au-ct-2022.10.26~9b2b203a/os_dep/linux/ioctl_cfg80211.c:5984:26: error: initialization of 'int (*)(struct wiphy *, struct net_device *, struct cfg80211_ap_update *)' from incompatible pointer type 'int (*)(struct wiphy *, struct net_device *, struct cfg80211_beacon_data *)' [-Werror=incompatible-pointer-types]
 5984 |         .change_beacon = cfg80211_rtw_change_beacon,
      |                          ^~~~~~~~~~~~~~~~~~~~~~~~~~
../rtl8812au-ct-2022.10.26~9b2b203a/os_dep/linux/ioctl_cfg80211.c:5984:26: note: (near initialization for 'rtw_cfg80211_ops.change_beacon')

Link: https://patchwork.ozlabs.org/project/openwrt/patch/TYCP286MB0895A26BA1C0517F2CBE71F0BCA72@TYCP286MB0895.JPNP286.PROD.OUTLOOK.COM/
Signed-off-by: Shiji Yang <[email protected]>

package/kernel/rtl8812au-ct/patches/009-fix-build-on-linux-6.7-kernel.patch

@@ -0,0 +1,29 @@
+--- a/os_dep/linux/ioctl_cfg80211.c
++++ b/os_dep/linux/ioctl_cfg80211.c
+@@ -4020,6 +4020,18 @@ static int cfg80211_rtw_start_ap(struct
+ 	return ret;
+ }
+
++#if (LINUX_VERSION_CODE >= KERNEL_VERSION(6,7,0))|| defined(BUILD_OPENWRT)
++static int cfg80211_rtw_change_beacon(struct wiphy *wiphy, struct net_device *ndev,
++				      struct cfg80211_ap_update *info)
++{
++	int ret = 0;
++	_adapter *adapter = (_adapter *)rtw_netdev_priv(ndev);
++
++	DBG_871X(FUNC_NDEV_FMT"\n", FUNC_NDEV_ARG(ndev));
++
++	ret = rtw_add_beacon(adapter, info->beacon.head, info->beacon.head_len,
++			     info->beacon.tail, info->beacon.tail_len);
++#else
+ static int cfg80211_rtw_change_beacon(struct wiphy *wiphy, struct net_device *ndev,
+                                       struct cfg80211_beacon_data *info)
+ {
+@@ -4029,6 +4041,7 @@ static int cfg80211_rtw_change_beacon(st
+ 	DBG_871X(FUNC_NDEV_FMT"\n", FUNC_NDEV_ARG(ndev));
+
+ 	ret = rtw_add_beacon(adapter, info->head, info->head_len, info->tail, info->tail_len);
++#endif
+
+ 	return ret;
+ }