license.bbclass: make sure that image manifest dir exists
Previously, write_deploy_manifest() was relying on
write_package_manifest() to create the subdirectory for the manifest
file. However, do_rootfs may be an empty function so that
write_package_manifest() will not be called and the manifest
subdirectory will not be created, causing a build failure. This patch
fixes that by creating the directory hierarchy inside
write_deploy_manifest().
[YOCTO #9446]
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
