Bluetooth: DUN: Add DUN profile support in Settings APP

It registers service listener for DUN profile with the
BT adapter, and it will track the profile status with
the service listener state chnages.

It also has support for DUN profile connection status
updation and DUN Disconnection from server.

CRs-Fixed: 557180
Change-Id: I83d4919821cb095429ff7e73a8974d92c4df086c
(cherry picked from commit 59ec7bc7e1f29edc74512b7c180dc9559202a063)
(cherry picked from commit a1df3d0f11a974c9caa199fc7be1c47cfd809cf3)
p2p: Fix for GC unable to scan GO after tear down.

A start of the search is not done on a group removed
broadcast event for mLastGroupFormed being set, which
would result in the Group Client not able to find the
GO , though a p2p_find is issued before a disconnect.
This is due to the fact that supplicant shall notify
the p2p device info only once per p2p_find.

To avoid this remove the conditions that is blocking
the search to happen and issue another p2p_find.

Change-Id: I4abad5c472808f9aa03e644eb1c6a26bfab8a4e6
CRs-Fixed: 504022
(cherry picked from commit b5da1dfa773904f1d7d4aaff407d3830098a9206)
(cherry picked from commit 86f8e54ec3cdac6b9474d462cfafbc894223a433)
P2P: Updates the P2P peer list when there is P2P State Change Action

In the current implementation 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. 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
(cherry picked from commit 17edb35f25b01560a2fd8c159432a794c46765f0)
(cherry picked from commit f4a4708e50657c14412a9f370f023fd89cba8e6b)
Bluetooth: Fix to connect PANU from the internet access menu

isPrefered is always true for PAN. So PANU connect fails,
Once user clicks on the internet access menu in Profiles
Setting. As PAN is not auto connect profile, So PANU should
connect from the internet access menu in Profiles Setting.

Change-Id: I6007c848e7c2703dc97f7f2113356a7aaeed0a0e
CRs-Fixed: 545350