enic: use appropriate key length in hash table
enic: use appropriate key length in hash table

RTE_HASH_KEY_LENGTH_MAX was deprecated, and the hash table
actually is hosting bigger keys than that size, so key length
has been increased to properly allocate all keys.

Signed-off-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>
Acked-by: Sujith Sankar <d5b75f696b8b7b87dce66a8a1e8db7f39eec402d@cisco.com>

msune/dpdk,tsphillips/dpdk-fork,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,john-mcnamara-intel/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,tsphillips/dpdk-fork,tsphillips/dpdk-fork,msune/dpdk,msune/dpdk