RSS HASH should be updated and queried by application,
Add related ops ('.rss_hash_update', '.rss_hash_conf_get') for DCF.
Because DCF doesn't support configure RSS HASH, only HASH key can be
updated within ops '.rss_hash_update'.
Signed-off-by: Steve Yang <stevex.yang@intel.com>
Signed-off-by: Kevin Liu <kevinx.liu@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>