Instead of assuming that bzImage is available, query bitbake enviroment
for KERNEL_IMAGETYPE.
(From OE-Core rev: d3e1d25a06dd4cb3ec80ea63352de24e50552481)
Signed-off-by: Maciej Borzecki <maciej.borzecki@rndity.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>