i40e: fix build with icc
i40e: fix build with icc

Since commit d798a94 ("mac vlan filter"),
ICC reports this error:
	lib/librte_pmd_i40e/i40e_ethdev.c(1763): error #188:
	enumerated type mixed with another type

Indeed, RTE_ETH_FILTER_NONE comes from enum rte_filter_type but
enum rte_filter_op is expected.

Signed-off-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

tsphillips/dpdk-fork,tsphillips/dpdk-fork,tsphillips/dpdk-fork,venkynv/dpdk-mirror,venkynv/dpdk-mirror,msune/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,venkynv/dpdk-mirror,mixja/dpdk,tsphillips/dpdk-fork,venkynv/dpdk-mirror,john-mcnamara-intel/dpdk,msune/dpdk,mixja/dpdk,mixja/dpdk,msune/dpdk,john-mcnamara-intel/dpdk