tests: Use longer timeout in test_ap_wps_er_add_enrollee

This is another one of the test cases that can time out frequently
under valgrind during WPS exchange. Increase the timeout to make
false error reports less likely to occur.

Signed-hostap: Jouni Malinen <j@w1.fi>

tests/hwsim/test_ap_wps.py

@@ -246,7 +246,7 @@ def test_ap_wps_er_add_enrollee(dev, apdev):
     dev[1].request("SET ignore_old_scan_res 1")
     dev[1].dump_monitor()
     dev[1].request("WPS_PIN any " + pin)
-    ev = dev[1].wait_event(["WPS-SUCCESS"], timeout=15)
+    ev = dev[1].wait_event(["WPS-SUCCESS"], timeout=30)
     if ev is None:
         raise Exception("Enrollee did not report success")
     ev = dev[1].wait_event(["CTRL-EVENT-CONNECTED"], timeout=15)