P2P: Unblock the code under wpas_p2p_set_group_idle_timeout.

Unblock the code under wpas_p2p_set_group_idle_timeout which was
blocked under ANDROID_P2P.The unblocked code is basically avoid
to set group idle timeout if the group is started.

Change-Id: I0bb134b014f932802da474ccdc20ceb1a086e87b
Merge "P2P: Unblock the code under wpas_p2p_set_group_idle_timeout."
Merge branch 'master' into HEAD