P2P: support p2p configuration for the dedicated P2P interface

The dedicated P2P interface might be created along with STA interface
via nl80211 interface added event. To ensure overlay configuration is
loaded, re-initialize p2p device interface on calling addP2pInterface
from wifi service.

Bug: 238505271
Bug: 238601241
Test: check p2p_supplicant.conf is overlayed.
      1. Do factory reset, and boot to home.
      2. Enter Wi-Fi Direct page to launch Wi-Fi Direct.
      3. Check /data/vendor/wifi/wpa/p2p_supplicant.conf content is
         the same as p2p_supplicant_overlay.conf in device folder.
Change-Id: I789e9edbbeeab492f74a8df05978318ed2faec53
1 file changed