Add GNSS VTS test for IGnssDebug.TimeDebug values sanity check

Bug: 36567271

Test: Copied the change to v1.0 and tested on Walleye.

Change-Id: I891ac655738cea72a67406dce954bbce34fc03ad
diff --git a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
index b4bad2c..0b27922 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
@@ -443,5 +443,9 @@
 
             EXPECT_GE(data.position.ageSeconds, 0);
         }
+
+        EXPECT_GE(data.time.timeEstimate, 1514764800000);  // Jan 01 2018 00:00:00
+        EXPECT_GT(data.time.timeUncertaintyNs, 0);
+        EXPECT_GT(data.time.frequencyUncertaintyNsPerSec, 0);
     }
 }