wifi(implementation): Allow wifi hal to access gps

Wifi Hal uses some gps components (LOWI) for gscans (location scans).
So, grant it gps group permission.

Denials:
03-03 16:56:03.845   623  6924 I QCALOG  : [MessageQ_Client] connecting
to server [/data/misc/location/mq/location-mq-s]
03-03 16:56:03.845   623  6924 E QCALOG  : [MessageQ_Client] connect
error: 13, [Permission denied]

Bug: 35959128
Test: Denials no longer seen.
Change-Id: Iddfddb46a585c7c15a26b1fa01889181e4a3cce1