net/i40e: fix hash lookup table

net/i40e: fix hash lookup table

The hash look up table (LUT) is managed by global register but it is not
initialized when RSS is disabled. Once user wants to enable RSS during
runtime, the LUT will not be initialized.
This patch fixes the issue by initializing the LUT whatever RSS enabled
or not.

Fixes: feaae285b342 ("net/i40e: support hash configuration in RSS flow")
Cc: stable@dpdk.org
Signed-off-by: Shougang Wang <shougangx.wang@intel.com>
Tested-by: Xi Zhang <xix.zhang@intel.com>
Acked-by: Jeff Guo <jia.guo@intel.com>