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
diff --git a/wifi/1.0/default/android.hardware.wifi@1.0-service.rc b/wifi/1.0/default/android.hardware.wifi@1.0-service.rc
index c0ae4d4..696b1f9 100644
--- a/wifi/1.0/default/android.hardware.wifi@1.0-service.rc
+++ b/wifi/1.0/default/android.hardware.wifi@1.0-service.rc
@@ -1,4 +1,4 @@
 service wifi_hal_legacy /vendor/bin/hw/android.hardware.wifi@1.0-service
     class hal
     user wifi
-    group wifi
+    group wifi gps