gpio: add cloverview probing support

gpio: add cloverview probing support

BZ: 15089

Cloverview SOC use different PCI Device ID for GPIO hence existing Medfield
GPIO driver won't be initialized on Cloverview SOC.

This patch add GPIO probing support for Cloverview SOC.

Change-Id: Ibc46a51605726ff9ddd8ffccf793bece3beb4949
Signed-off-by: Leonard D Mai <leonard.mai@intel.com>
Reviewed-by: Pierre Tardy <pierre.tardy@intel.com>
Tested-by: Siva Prasath Ponnusamy <siva.prasath.ponnusamy@intel.com>
Reviewed-on: http://android.intel.com:8080/25026
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Gross, Mark <mark.gross@intel.com>