With the sdl frontend, qemu isn't able to even boot fully,
so let's skip the test early.
(From OE-Core rev: 7b0708da20e4f04070837e5696e4fa3ee5990e8f)
Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>