qemuboot: don't fail when QB_DEFAULT_KERNEL isn't symlink
* in some cases we might set QB_DEFAULT_KERNEL to the real filename
instead of symlink and then this whole readlink work around actually
breaks the build, because os.readlink fails on normal files:
>>> os.readlink('deploy/images/qemux86/bzImage-linux-yocto-qemux86-master-
20160927084848.bin')
'bzImage-linux-yocto-qemux86.bin'
>>> os.readlink('deploy/images/qemux86/bzImage-linux-yocto-qemux86.bin')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 22] Invalid argument: '/jenkins/mjansa/build-starfish-master-mcf/BUILD/deploy/images/qemux86/bzImage-linux-yocto-qemux86.bin'
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
