Add showMapping command to the PFW

BZ: 99822

Developers often need to get the mapping corresponding to a specific
parameter. However, the PFW doesn't provide a command to achieve this
goal.

This patch aims to add the showMapping command to the PFW.

Change-Id: I05af64a408abe4ceb7f5d177a0ff5fa0461034d0
Signed-off-by: Frédéric Boisnard <fredericx.boisnard@intel.com>
Reviewed-on: http://android.intel.com:8080/105145
Reviewed-by: Benavoli, Patrick <patrick.benavoli@intel.com>
Reviewed-by: Denneulin, Guillaume <guillaume.denneulin@intel.com>
Reviewed-by: Gonzalve, Sebastien <sebastien.gonzalve@intel.com>
Tested-by: Barthes, FabienX <fabienx.barthes@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>
14 files changed