RDS/IW+IB: Allow max credit advertise window.

Fix hack that restricts the credit advertisement to 127.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc net/rds/ib.h
Simple merge

diff --cc net/rds/ib_recv.c
Simple merge

diff --cc net/rds/ib_send.c
Simple merge

diff --cc net/rds/iw.h
Simple merge

diff --cc net/rds/iw_recv.c
Simple merge

diff --cc net/rds/iw_send.c
Simple merge

diff --cc net/rds/rds.h
Simple merge