net/i40e: fix port start during config restore

net/i40e: fix port start during config restore

If configuring VF promiscuous mode is not supported, return '-ENOTSUP'
error code in '.promiscuous_enable/disable' dev_ops.

This is to fix the port start during config restore, where if
'.promiscuous_enable/disable' dev_ops exists and return any value other
than '-ENOTSUP', start will fail.

Same is done for '.allmulticast_enable/disable' dev_ops.

Fixes: ddc7cb0d9453 ("net/i40e: re-program promiscuous mode on VF interface")
Cc: stable@dpdk.org
Signed-off-by: Xiao Zhang <xiao.zhang@intel.com>
Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>