Initialize reference counter for egl_display_t
Initialize reference counter for egl_display_t

Add missing member initialization for reference counter, used to determine
if a context is ready.

Change-Id: I45f81177ac2851129681f827afe015b60b3cd73c

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base