IB/rdmavt: Fix adaptive pio hang

The RVT_S_WAIT_PIO_DRAIN flag was missing from
the set of flags indicating a qp is waiting
on a resource.

This caused the sleep/wakeup for adaptive pio
drain to lose a wakeup "hanging" a QP.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

include/rdma/rdmavt_qp.h

@@ -117,8 +117,9 @@
 /*
  * Wait flags that would prevent any packet type from being sent.
  */
-#define RVT_S_ANY_WAIT_IO (RVT_S_WAIT_PIO | RVT_S_WAIT_TX | \
-	RVT_S_WAIT_DMA_DESC | RVT_S_WAIT_KMEM)
+#define RVT_S_ANY_WAIT_IO \
+	(RVT_S_WAIT_PIO | RVT_S_WAIT_PIO_DRAIN | RVT_S_WAIT_TX | \
+	 RVT_S_WAIT_DMA_DESC | RVT_S_WAIT_KMEM)
 
 /*
  * Wait flags that would prevent send work requests from making progress.