RDMA/hw/qib/qib_rc: Fix some worthy kernel-docs demote hardly complete one

Fixes the following W=1 kernel build warning(s):

 drivers/infiniband/hw/qib/qib_rc.c:216: warning: Function parameter or member 'flags' not described in 'qib_make_rc_req'
 drivers/infiniband/hw/qib/qib_rc.c:1008: warning: Function parameter or member 'aeth' not described in 'do_rc_ack'
 drivers/infiniband/hw/qib/qib_rc.c:1008: warning: Function parameter or member 'val' not described in 'do_rc_ack'
 drivers/infiniband/hw/qib/qib_rc.c:1008: warning: Function parameter or member 'rcd' not described in 'do_rc_ack'
 drivers/infiniband/hw/qib/qib_rc.c:1274: warning: Function parameter or member 'rcd' not described in 'qib_rc_rcv_resp'
 drivers/infiniband/hw/qib/qib_rc.c:1497: warning: Function parameter or member 'rcd' not described in 'qib_rc_rcv_error'

Link: https://lore.kernel.org/r/20210121094519.2044049-15-lee.jones@linaro.org
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Cc: Doug Ledford <dledford@redhat.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/qib/qib_rc.c

@@ -207,6 +207,7 @@ static int qib_make_rc_ack(struct qib_ibdev *dev, struct rvt_qp *qp,
 /**
  * qib_make_rc_req - construct a request packet (SEND, RDMA r/w, ATOMIC)
  * @qp: a pointer to the QP
+ * @flags: unused
  *
  * Assumes the s_lock is held.
  *
@@ -992,7 +993,7 @@ static struct rvt_swqe *do_rc_completion(struct rvt_qp *qp,
 	return wqe;
 }
 
-/**
+/*
  * do_rc_ack - process an incoming RC ACK
  * @qp: the QP the ACK came in on
  * @psn: the packet sequence number of the ACK
@@ -1259,6 +1260,7 @@ static void rdma_seq_err(struct rvt_qp *qp, struct qib_ibport *ibp, u32 psn,
  * @psn: the packet sequence number for this packet
  * @hdrsize: the header length
  * @pmtu: the path MTU
+ * @rcd: the context pointer
  *
  * This is called from qib_rc_rcv() to process an incoming RC response
  * packet for the given QP.
@@ -1480,6 +1482,7 @@ static void qib_rc_rcv_resp(struct qib_ibport *ibp,
  * @opcode: the opcode for this packet
  * @psn: the packet sequence number for this packet
  * @diff: the difference between the PSN and the expected PSN
+ * @rcd: the context pointer
  *
  * This is called from qib_rc_rcv() to process an unexpected
  * incoming RC packet for the given QP.