egl: Use reserved values for eglGetFrameTimestamps

Also update opengl/specs/README so it's clear which blocks
of values are already reserved.

Bug: 36887025
Test: --deqp-case=dEQP-EGL*get_frame_timestamps*
Change-Id: I2cd83553cc475fdf3f8cdfadf2eaf32abc8a7c09
diff --git a/opengl/specs/README b/opengl/specs/README
index e922740..cba4453 100644
--- a/opengl/specs/README
+++ b/opengl/specs/README
@@ -4,8 +4,14 @@
 The table below tracks usage of EGL enumerant values that have been reserved
 for use by Android extensions.
 
+See https://github.com/KhronosGroup/EGL-Registry/blob/master/api/egl.xml
+for a list of all enumarant values currently reserved and registered with
+Khronos.
+
      Value                       Extension
-----------------     ----------------------------------
+================     ==================================
+0x3140 - 0x314F      Reserved block
+================     ==================================
 0x3140               EGL_NATIVE_BUFFER_ANDROID (EGL_ANDROID_image_native_buffer)
 0x3141               EGL_PLATFORM_ANDROID_KHR (KHR_platform_android)
 0x3142               EGL_RECORDABLE_ANDROID (EGL_ANDROID_recordable)
@@ -18,17 +24,23 @@
 0x314A               EGL_IMAGE_CROP_RIGHT_ANDROID (EGL_ANDROID_image_crop)
 0x314B               EGL_IMAGE_CROP_BOTTOM_ANDROID (EGL_ANDROID_image_crop)
 0x314C               EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID (EGL_ANDROID_front_buffer_auto_refresh)
-0x314D               EGL_TIMESTAMPS_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x314E               EGL_COMPOSITE_DEADLINE_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x314F               EGL_COMPOSITE_INTERVAL_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3150               EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3151               EGL_REQUESTED_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3152               EGL_RENDERING_COMPLETE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3153               EGL_COMPOSITION_LATCH_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3154               EGL_FIRST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3155               EGL_LAST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3156               EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3157               EGL_DISPLAY_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3158               EGL_DEQUEUE_READY_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x3159               EGL_READS_DONE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
-0x315A - 0x315F      (unused)
+0x314D - 0x314F      (unused)
+
+     Value                       Extension
+================     ==================================
+0x3430 - 0x343F      Reserved block
+================     ==================================
+0x3430               EGL_TIMESTAMPS_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3431               EGL_COMPOSITE_DEADLINE_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3432               EGL_COMPOSITE_INTERVAL_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3433               EGL_COMPOSITE_TO_PRESENT_LATENCY_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3434               EGL_REQUESTED_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3435               EGL_RENDERING_COMPLETE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3436               EGL_COMPOSITION_LATCH_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3437               EGL_FIRST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3438               EGL_LAST_COMPOSITION_START_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x3439               EGL_FIRST_COMPOSITION_GPU_FINISHED_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x343A               EGL_DISPLAY_PRESENT_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x343B               EGL_DEQUEUE_READY_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x343C               EGL_READS_DONE_TIME_ANDROID (EGL_ANDROID_get_frame_timestamps)
+0x343D - 0x343F      (unused)