mkfs: add noalign option to usage()

mkfs: add noalign option to usage()

Although it has been added to manpage, there is no information about the
existence of noalign option into the usage().

Changelog:

V2: Remove space in comma separated options
V3: Aligned the option together with another alignment options to make mutual
    exclusive options more visible

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Rich Johnston <rjohnston@sgi.com>