fm10k: add support for Tx/Rx rings

This change adds the defines and structures necessary to support both Tx
and Rx descriptor rings.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --cc drivers/net/ethernet/intel/fm10k/fm10k.h
Simple merge

diff --cc drivers/net/ethernet/intel/fm10k/fm10k_main.c
Simple merge

diff --cc drivers/net/ethernet/intel/fm10k/fm10k_netdev.c
Simple merge

diff --cc drivers/net/ethernet/intel/fm10k/fm10k_pci.c
Simple merge