RDMA/cxgb4/cxgb4vf/csiostor: Cleanup macros/register defines related to PCIE, RSS and FW

This patch cleanups all PCIE, RSS & FW related macros/register defines that are
defined in t4fw_api.h and the affected files.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>