s390/qdio: use absolute data address in ESTABLISH ccw

Clean up yet another path where HW wants an absolute address, and we've
been implicitly relying on V=R.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>