Expose core EGL entry points to eglGetProcAddress

Required behavior for EGL_KHR_get_all_proc_addresses.

Change-Id: I1e6209ef3cb9f2fa6f22808b077c35139d4cb814
diff --git a/opengl/libs/EGL/egldefs.h b/opengl/libs/EGL/egldefs.h
index b905ea0..9858276 100644
--- a/opengl/libs/EGL/egldefs.h
+++ b/opengl/libs/EGL/egldefs.h
@@ -44,6 +44,7 @@
     EGLint              minor;
     egl_t               egl;
 
+    void*               libEgl;
     void*               libGles1;
     void*               libGles2;
 };