Allow setting new values for mock speed and bearing in GNSS HAL

Bug: None
Test: lshal debug android.hardware.gnss@2.1::IGnss/default location bea=30 spd=40
      on Cuttlefish instance
Change-Id: Ib954ba44720627e54e69aa29b0a744f203a65704
diff --git a/gnss/common/utils/default/MockLocation.cpp b/gnss/common/utils/default/MockLocation.cpp
index 2d8e7c5..c90075f 100644
--- a/gnss/common/utils/default/MockLocation.cpp
+++ b/gnss/common/utils/default/MockLocation.cpp
@@ -21,5 +21,7 @@
 float gMockLatitudeDegrees{37.4219999};
 float gMockLongitudeDegrees{-122.0840575};
 float gMockAltitudeMeters{1.60062531};
+float gMockBearingDegrees{0};
+float gMockSpeedMetersPerSec{0};
 
 }  // namespace android::hardware::gnss::common