Fix null pointer exception due to no device mac address

When legacy clients connect to P2P GO, there won't be a
P2P device address in AP-STA-CONNECTED/AP-STA-DISCONNECTED event.
So fill the p2p device address in AP-STA-CONNECTED and AP-STA-DISCONNECTED
events to framework as {0, 0, 0, 0, 0, 0};

Bug: 310969135
Bug: 291202830
Test: Setup P2P auto GO
      Connect from a legacy STA to GO
Change-Id: I10e5fb023294d65318ab74de6546eb736dd72258
1 file changed