From: Praveen Shetty <praveen.shetty@intel.com>

A "configuration queue" is a software term to denote
a hardware mailbox queue dedicated to FXP (Flexible packet processor)
programming.While the hardware does not have a construct of a
"configuration queue", software does to state clearly
the distinction between a queue software dedicates to
regular mailbox processing (e.g. CPChnl or Virtchnl)
and a queue software dedicates for programming the FXP
Pipeline.From the hardware’s viewpoint, both mailbox and
configuration queues are treated as "control" queues,
with the main distinction being the "opcode" in their
descriptors.This patch will requests queues from the
firmware using an add_queue Virtchnl message and sets
them up as config queues.The vCPF driver then uses these
config queues to program the FXP pipeline via rte_flow.

Signed-off-by: Praveen Shetty <praveen.shetty@intel.com>
Tested-by: Dhananjay Shukla <dhananjay.shukla@intel.com>
Tested-by: Atul Patel  <atul.patel@intel.com>

Acked-by: Aman Singh <aman.deep.singh@intel.com>

<snip>