Advertise the actual max limits for things like qp depths, number of
qps, cqs, etc.

Clean up the queue allocation for qps and cqs.
Signed-off-by: NSteve Wise <swise@opengridcomputing.com>
Signed-off-by: NHariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>