Rename Unix_time property to EPOCH_TIME

Bug: 188227292
Test: build and flash with google VHAL
      check property from KitchenSink
Change-Id: I7dc1833a000949f246a1a8be6f87970a1478832b
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index abf33a3..e234aa9 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -1201,7 +1201,7 @@
         {
                 .config =
                         {
-                                .prop = toInt(VehicleProperty::UNIX_TIME),
+                                .prop = toInt(VehicleProperty::EPOCH_TIME),
                                 .access = VehiclePropertyAccess::READ_WRITE,
                                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
                         },
diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index e22f9fa..6bfda32 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -1446,7 +1446,7 @@
      * @access VehiclePropertyAccess:READ_WRITE
      * @unit VehicleUnit:MILLI_SECS
      */
-    UNIX_TIME = (
+    EPOCH_TIME = (
         0x0606
         | VehiclePropertyGroup:SYSTEM
         | VehiclePropertyType:INT64