[IBAL] Refine UAL_NDI_NOOP handler.

[IBAL] Refine UAL_NDI_NOOP handler.

The UAL_NDI_NOOP IOCTL handler was added to allow memory registration in user-mode to notify a client using an I/O completion port.  This patch extends the functionality to allow the IOCTL to return either STATUS_SUCCESS or STATUS_TIMEOUT.  The STATUS_TIMEOUT facility is used by the NetworkDirect provider when IBAT returns pending.  It's crude, but gets the job done.

Signed-off-by: Fab Tillier <ftillier@microsoft.com>
git-svn-id: svn://openib.tc.cornell.edu/gen1/trunk@1391 ad392aa1-c5ef-ae45-8dd8-e69d62a5ef86