Add pr_fmt and convert usb style logging macro uses to pr_<level>.
Coalesce format strings.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NErik Andrén <erik.andren@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>