- DirectFB is not supported by gtk versions >= 2.18
- use packagegroup-core-directfb instead of packagegroup-core-gtk-directfb
[YOCTO #3642]
(From OE-Core rev: f4724b132de09d0c3db3755214ca83bb5acf5550)
Signed-off-by: Constantin Musca <constantinx.musca@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>