libEGL: Add wrappers for partial update functions

This adds EGL wrapper functions for the following EGL extensions:
    EGL_EXT_buffer_age
    EGL_KHR_partial_update
    EGL_KHR_swap_buffers_with_damage

Change-Id: I407acda1e0310f7f01a5efe9c915721a941138a4
3 files changed