IB/hfi1: Split IB counter allocation

Split the IB device and port counter allocation.  Remove
the need for a lock.  Clean up pointer usage.

Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Link: https://lore.kernel.org/r/167329106431.1472990.12587703493884915680.stgit@awfm-02.cornelisnetworks.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>