[nrf fromlist] modules: hostap: Use net_mgmt context

Using a separate workqueue causes issues without any special locking to
synchronize with networking threads e.g., interface being removed while
the workqueue is trying to synchronize with WPA supplicant.

It's easier to use the net_mgmt thread which is in better sync with
networking.

Upstream PR: zephyrproject-rtos/zephyr#79231

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

modules/hostap/src/supp_main.c

@@ -475,9 +475,6 @@ static void submit_iface_work(struct supplicant_context *ctx,
 static void interface_handler(struct net_mgmt_event_callback *cb,
 			      uint32_t mgmt_event, struct net_if *iface)
 {
-	struct supplicant_context *ctx = CONTAINER_OF(cb, struct supplicant_context,
-						      cb);
-
 	if ((mgmt_event & INTERFACE_EVENT_MASK) != mgmt_event) {
 		return;
 	}
@@ -490,13 +487,13 @@ static void interface_handler(struct net_mgmt_event_callback *cb,
 
 	if (mgmt_event == NET_EVENT_IF_ADMIN_UP) {
 		LOG_INF("Network interface %d (%p) up", net_if_get_by_iface(iface), iface);
-		submit_iface_work(ctx, iface, add_interface);
+		add_interface(get_default_context(), iface);
 		return;
 	}
 
 	if (mgmt_event == NET_EVENT_IF_ADMIN_DOWN) {
 		LOG_INF("Network interface %d (%p) down", net_if_get_by_iface(iface), iface);
-		submit_iface_work(ctx, iface, del_interface);
+		del_interface(get_default_context(), iface);
 		return;
 	}
 }