This enables a world build without x11. GTK3DISTROFEATURES is not
enough because gtk+-x11.pc is still required.
Fixes [YOCTO #8611].
(From OE-Core rev: dbdcd87144cc1cd6c5d50c800c7f266aaf25ca17)
Signed-off-by: Jussi Kukkonen <jussi.kukkonen@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>