[PATCH] s390: fix blk_queue_ordered call in dasdc

Add the missing third argument to the blk_queue_ordered call and use the
constant QUEUE_ORDERED_DRAIN instead of "1".

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>