s390/scm_block: force cluster writes

Force writes to Storage Class Memory (SCM) to be in done in clusters.

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

diff --cc drivers/s390/block/Kconfig
Simple merge

diff --cc drivers/s390/block/Makefile
Simple merge

diff --cc drivers/s390/block/scm_blk.c
Simple merge

diff --cc drivers/s390/block/scm_blk.h
Simple merge

diff --cc drivers/s390/block/scm_blk_cluster.c
Simple merge