egl: Allow creation of per surface out fence

egl: Allow creation of per surface out fence

Add plumbing to allow creation of per display surface out fence.

This can be used to implement explicit sync. One user of which is
Android - which will be addressed with next commit.

Signed-off-by: Zhongmin Wu <zhongmin.wu@intel.com>
Signed-off-by: Yogesh Marathe <yogesh.marathe@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
[Emil Velikov: reorder so there's no intermetent regressions, split]
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>