README: Add section to install required packages on (open)SUSE
The README already lists how to install the required packages on other popular
distributions. Since a lot of filesystem development happens on SUSE systems and
both the commands as well as the list of packages are slightly different,
it only makes sense to include these as well.
Signed-off-by: Gabriel Niebler <gniebler@suse.com> Reviewed-by: Zorro Lang <zlang@redhat.com> Signed-off-by: Zorro Lang <zlang@kernel.org>