Revert "libqdutils: Refer to standard definitions for display types."

This reverts commit 83a945b0544dd2e69211b705e6aeec79d0fece4a.

Change-Id: I4fbbdfc9959bb2931e167bd73ad7accc389eb210
diff --git a/libqdutils/display_config.h b/libqdutils/display_config.h
index 2cf5c80..9ba60f2 100644
--- a/libqdutils/display_config.h
+++ b/libqdutils/display_config.h
@@ -47,10 +47,10 @@
 
 // Use this enum to specify the dpy parameters where needed
 enum {
-    DISPLAY_PRIMARY = HWC_DISPLAY_PRIMARY,
-    DISPLAY_EXTERNAL = HWC_DISPLAY_EXTERNAL,
-    DISPLAY_TERTIARY = HWC_DISPLAY_TERTIARY,
-    DISPLAY_VIRTUAL = HWC_DISPLAY_VIRTUAL,
+    DISPLAY_PRIMARY = 0,
+    DISPLAY_EXTERNAL,
+    DISPLAY_TERTIARY,
+    DISPLAY_VIRTUAL,
 };
 
 // External Display states - used in setSecondaryDisplayStatus()