Implement issue #6646859: 4K!!!!  4K!!!!  4K!!!!

Change-Id: I1bb630c58d0d41446b726de1b9d2c3875fcbbceb
diff --git a/include/android/configuration.h b/include/android/configuration.h
index 0f5c14a..d5cddb3 100644
--- a/include/android/configuration.h
+++ b/include/android/configuration.h
@@ -44,6 +44,7 @@
     ACONFIGURATION_DENSITY_HIGH = 240,
     ACONFIGURATION_DENSITY_XHIGH = 320,
     ACONFIGURATION_DENSITY_XXHIGH = 480,
+    ACONFIGURATION_DENSITY_XXXHIGH = 640,
     ACONFIGURATION_DENSITY_NONE = 0xffff,
 
     ACONFIGURATION_KEYBOARD_ANY  = 0x0000,