There is a chance of a race between arming the CQ and receiving
completions. By reporting CQ missed events any ULPs should poll
again to get the completions.

Fixes: 29c8d9eb ("IB: Add vmw_pvrdma driver")
Acked-by: NAditya Sarwade <asarwade@vmware.com>
Signed-off-by: NBryan Tan <bryantan@vmware.com>
Signed-off-by: NAdit Ranadive <aditr@vmware.com>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>