ice: track q_id in representor

Previously queue index of control plane VSI used by port representor was
always id of VF. If we want to allow adding port representors for
different devices we have to track queue index in the port representor
structure.

Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>