Since the class was already present, use it. Also, this will have the
postinstalls run on host, at do_rootfs time.
[YOCTO #3602]
(From OE-Core rev: 2e6c202c000cfd0edbc024468c9f6c4b8b7eb816)
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>