net/i40e: refactor RSS flow

net/i40e: refactor RSS flow

1. Delete original code.
2. Add 2 tables(One maps flow pattern and RSS type to PCTYPE,
   another maps RSS type to input set).
3. Parse RSS pattern and RSS type to get PCTYPE.
4. Parse RSS action to get queues, RSS function and hash field.
5. Create and destroy RSS filters.
6. Create new files for hash flows.

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>