bnx2x: add RSS capability for GRE traffic

The patch drives FW to perform RSS for GRE traffic,
based on inner headers.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
Simple merge

diff --cc drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
Simple merge

diff --cc drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
Simple merge