When booting weston images this error is seen commonly, but Qemu boots
the image fine, session seat error is thrown by libweston perhaps using
--seat option or setting XDG_SEAT variable in weston.ini could fix it
[YOCTO #13828]
(From OE-Core rev: 1f9d36722132c93c19651ea59062b3d5be01bb72)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>