qemu-binfmt-conf.sh should use "-F" as short option for "--qemu-suffix".
Fix the getopt call to make this work.

Fixes: 7155be7c ("qemu-binfmt-conf.sh: allow to provide a suffix to the interpreter name")
Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20211129135100.3934-1-mwilck@suse.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>