64 bit app only support for cuttlefish based auto products

Bug: 164158212
Test: Build cuttlefish based auto product and check zygote64 is used
Change-Id: If43205e5d56f40958cf6b000931675225049a11b
diff --git a/vsoc_arm64/auto/aosp_cf.mk b/vsoc_arm64/auto/aosp_cf.mk
index 2d311db..1aeceed 100644
--- a/vsoc_arm64/auto/aosp_cf.mk
+++ b/vsoc_arm64/auto/aosp_cf.mk
@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 
-$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit_only.mk)
 $(call inherit-product, device/google/cuttlefish/shared/auto/device.mk)
 $(call inherit-product, device/google/cuttlefish/vsoc_arm64/device.mk)