Provide more information in the case the sources are not found in the
unpack step.
(Bitbake rev: 27a2214bf6f2e7c61bfc422a20959a55f7e0d25d)
Signed-off-by: Urs Fässler <urs.fassler@bbv.ch>
Signed-off-by: Pascal Bach <pascal.bach@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>