After changes in openembedded-core@1a4ab9f, image licenses moved one
directory down into ${SSTATE_PKGARCH} subdir.
(From yocto-docs rev: 244481a93a67c781ae846ef3b8bd8f8f30906a86)
Signed-off-by: Ilya A. Kriveshko <iillyyaa@gmail.com>
Reviewed-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>