If Clutter is building the Wayland backend but not the X11 backend, the Cogl
support doesn't get enabled so the Wayland backend (which uses it) fails to
compile.
Backport a fix from upstream to fix this situation.
(From OE-Core rev: 6df36a004210901acceff4a201d0f910d99eccfe)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>