s390/scm: convert to blk-mq

Convert scm_blk to use the blk-mq API. This is just a simple
conversion since we still use a single queue.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2 files changed