tests: Modify p2p_msg_long_ssid to support P2P Device interface

Waiting for the P2P-DEVICE-FOUND event should be done on the global
control interface to support configurations that use a dedicated P2P
Device interface.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>

tests/hwsim/test_p2p_messages.py

@@ -240,7 +240,7 @@ def test_p2p_msg_long_ssid(dev, apdev):
     msg['payload'] += ie_p2p(attrs)
     msg['payload'] += ie_ssid(255 * 'A')
     hapd.mgmt_tx(msg)
-    ev = dev[0].wait_event(["P2P-DEVICE-FOUND"], timeout=5)
+    ev = dev[0].wait_global_event(["P2P-DEVICE-FOUND"], timeout=5)
     if ev is None:
         raise Exception("Timeout on device found event")