Make gce_x86 devices include all the densities

Bug: 67866323
Change-Id: Idc0553ccd80a60b7211fff1c61be0d9dad261415
Test: Local build and boot
diff --git a/shared/device.mk b/shared/device.mk
index bd24213..b31c41b 100644
--- a/shared/device.mk
+++ b/shared/device.mk
@@ -92,7 +92,7 @@
 
 DEVICE_PACKAGE_OVERLAYS := device/google/cuttlefish/shared/overlay
 PRODUCT_AAPT_CONFIG := normal large xlarge hdpi xhdpi
-PRODUCT_AAPT_PREF_CONFIG := xhdpi
+# PRODUCT_AAPT_PREF_CONFIG is intentionally not set to pick up every density resources.
 
 #
 # General files