tests: Fix persistent_group_per_sta_psk for P2P Device case

The dev[1] <--> dev[2] data connectivity test was using incorrect
function. dev[2] is also using a P2P group and as such, can have a
different group interface.

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

tests/hwsim/test_p2p_persistent.py

@@ -190,7 +190,7 @@ def test_persistent_group_per_sta_psk(dev):
         raise Exception("Joining client did not recognize persistent group")
     if r_res['psk'] == c_res['psk']:
         raise Exception("Same PSK assigned for both clients")
-    hwsim_utils.test_connectivity_p2p_sta(dev[1], dev[2])
+    hwsim_utils.test_connectivity_p2p(dev[1], dev[2])
 
     logger.info("Remove persistent group and re-start it manually")
     dev[0].remove_group()