Add EGL_EXT_image_gl_colorspace to EGL whitelist.

This extension will be required by CDD for Android P when the feature
android.vr.high_performance is present.

Bug: 32147090
Bug: 76152545
Test: Built and flashed Pixel XL, verified that the extension is present.
Change-Id: Id14d80c7ec6e956b317d227f9f1ab7b2aea656f2
diff --git a/opengl/libs/EGL/eglApi.cpp b/opengl/libs/EGL/eglApi.cpp
index b453d19..f3a9ad8 100644
--- a/opengl/libs/EGL/eglApi.cpp
+++ b/opengl/libs/EGL/eglApi.cpp
@@ -94,6 +94,7 @@
 char const * const gExtensionString  =
         "EGL_KHR_image "                        // mandatory
         "EGL_KHR_image_base "                   // mandatory
+        "EGL_KHR_image_gl_colorspace "
         "EGL_KHR_image_pixmap "
         "EGL_KHR_lock_surface "
         "EGL_KHR_gl_colorspace "