Updates the P2P peer list when there is P2P State Change Action

In the current implementation of JBMR2 the P2P window gets
updated with the Peers list only when there is
WIFI_P2P_PEERS_CHANGED_ACTION Intent.
Thus the P2P status remains unchanged when there is
WIFI_P2P_STATE_CHANGED_ACTION intent.
Here the changes are imported from JBMR1. When there is back and forth
navigation to P2P window, WIFI_P2P_STATE_CHANGED_ACTION intent invokes
the onPeersAvaliable function asynchronously and updates the P2P status
and peers list.

CRs-fixed: 512821
Change-Id: I69b26ef72bf30f547bf8fb5580d440c5119df054
Packages: Fix for SAP turn ON/OFF fails issue.

Turnig ON/OFF SAP repeatedly when WIFI is ON results
in command CMD_SET_AP being received in WifiStaEnabledState
of the state machine, which will not be handled and because
of this SoftAP is not turned ON and we receive no events
thus the check box remains greyed out/disabled.

To resolve this wait for WIFI_STATE_CHANGED intent before
re-enabling the SAP.

Change-Id: I1a37ac6406ea5e342d6dcb80654c2728fa447e57
CRs-Fixed: 525872