GenWQE: Add wmb before DDCB is started
GenWQE: Add wmb before DDCB is started

Needed to add wmb() before we send the DDCB for execution.
Without the syncronizing it failed on System p.

Signed-off-by: Frank Haverkamp <ead9589793120d6abd41dc830e46c3a946a6de96@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs