Switch vehicle HAL from 2.1 to 2.0

BUG: 65693356
Test: local car emulator

Change-Id: Iff1ecc605e2301a8ccd7c22ee4e6cfbd3ee45a8b
diff --git a/common/product/car.mk b/common/product/car.mk
index 76404b6..848d73d 100644
--- a/common/product/car.mk
+++ b/common/product/car.mk
@@ -19,7 +19,7 @@
 
 # Auto modules
 PRODUCT_PACKAGES += \
-    android.hardware.automotive.vehicle@2.1-service
+    android.hardware.automotive.vehicle@2.0-service
 
 # Replace framework versions with dummy one, which is essentially
 # the same as removing the xml. Needs this as there is no easy