Add property for UDFPS antispoof

Bug: 187394838
Bug: 187562932
Test: Antispoof is disabled by default.
Test: Use the following adb command to manully turn on antispoof.
      "setprop persist.vendor.fingerprint.disable.fake.override 0"
Change-Id: I56d1129af7e73a901ea5f3258517e68545c38894
diff --git a/device-raven.mk b/device-raven.mk
index 248d7ba..1c93601 100644
--- a/device-raven.mk
+++ b/device-raven.mk
@@ -117,3 +117,7 @@
 PRODUCT_PACKAGES += \
     NoCutoutOverlay \
     AvoidAppsInCutoutOverlay
+
+# Fingerprint antispoof property
+PRODUCT_PRODUCT_PROPERTIES +=\
+    persist.vendor.fingerprint.disable.fake.override=none