cas: add CAS hal to build

bug: 22804304
Change-Id: I05604644854a561bc9356bb66bcd7d315e3f2d5a
diff --git a/target/product/base.mk b/target/product/base.mk
index 392f432..c209b39 100644
--- a/target/product/base.mk
+++ b/target/product/base.mk
@@ -140,6 +140,7 @@
 
 # Essential HAL modules
 PRODUCT_PACKAGES += \
+    android.hardware.cas@1.0-service \
     android.hardware.media.omx@1.0-service
 
 # XML schema files