net/octeontx2: allow VFs to enable back pressure
net/octeontx2: allow VFs to enable back pressure

Allow VFs to enable backpressure for performance reasons.
The backpressure control is with kernel AF driver that will enable
backpressure even if one PF/VF requests it and disable it only
after all the PFs/VFs request for disable.

Signed-off-by: Nithin Dabilpuram <5876e1d9ac41f57357c508f9123b8d030ff3606b@marvell.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk