GnssStats atom entity name change

time_to_first_fix_milli_s  to time_to_first_fix_millis
Bug: 142905639
Test: Compiled

Change-Id: Iddeed5d0211d530369506ad66276b3c23b4c2369
diff --git a/atoms.proto b/atoms.proto
index 81d059e..1671ca6 100644
--- a/atoms.proto
+++ b/atoms.proto
@@ -9490,7 +9490,7 @@
     optional int64 time_to_first_fix_reports = 3;
 
     // Total pulled reported time to first fix (in milli-seconds) since boot
-    optional int64 time_to_first_fix_milli_s = 4;
+    optional int64 time_to_first_fix_millis = 4;
 
     // Number of position accuracy reports since boot
     optional int64 position_accuracy_reports = 5;