net/ipn3ke: fix line side statistics register read
net/ipn3ke: fix line side statistics register read

To read line side statistics register, eth_group_sel
args in function ipn3ke_indirect_mac_read should be 0.
When eth_group_sel is 1, the nic side register is read.

Fixes: 5a6d883878db ("net/ipn3ke: implement statistics")
Cc: stable@dpdk.org

Signed-off-by: Andy Pei <495968cb2b3cf2ab5bd53dc54ba9a3450dc45709@intel.com>
Acked-by: Rosen Xu <8f603db01337dbfe2ce4743ebc0cdbcec6fa456f@intel.com>

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