Add supoprt for 3 COSes for 578xx devices.
Fix HW configuration for PFC feature according to new HSI in link layer.
Signed-off-by: NDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: NVladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: NEilon Greenstein <eilong@broadcom.com>
Signed-off-by: NDavid S. Miller <davem@conan.davemloft.net>