Enable incremental delivery on cuttlefish

Bug: 133435829
Test: Can incrementally install an apk
Change-Id: I7b1b424e46297b8e569d9fc33e94403fbcccd338

shared/device.mk

diff --git a/shared/device.mk b/shared/device.mk
index 9860135..cc867b3 100644
--- a/shared/device.mk
+++ b/shared/device.mk
@@ -49,6 +49,7 @@
 PRODUCT_PRODUCT_PROPERTIES += \
     persist.adb.tcp.port=5555 \
     ro.com.google.locationfeatures=1 \
+    ro.incremental.enable=1
 
 # Explanation of specific properties:
 #   debug.hwui.swap_with_damage avoids boot failure on M http://b/25152138