Thermal: change default implementation target as mock

Test: Build
Change-Id: I833fac3091645a7d95e71f0ef1ef4917f65be4f9
diff --git a/thermal/2.0/default/android.hardware.thermal@2.0-service.rc b/thermal/2.0/default/android.hardware.thermal@2.0-service.rc
index de49d20..046c771 100644
--- a/thermal/2.0/default/android.hardware.thermal@2.0-service.rc
+++ b/thermal/2.0/default/android.hardware.thermal@2.0-service.rc
@@ -1,4 +1,4 @@
-service vendor.thermal-hal-2-0-mock /vendor/bin/hw/android.hardware.thermal@2.0-service
+service vendor.thermal-hal-2-0-mock /vendor/bin/hw/android.hardware.thermal@2.0-service.mock
     interface android.hardware.thermal@2.0::IThermal default
     class hal
     user system