crypto: Fix some code style problems, add spaces around operator

This patch fixes error style problems found by checkpatch.pl:
ERROR: spaces required around that '*'
ERROR: space required after that ','
ERROR: spaces required around that '|'

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Liyang Shi <shiliyang@huawei.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>