staging/Kconfig: Changes to make Matrix driver visible in /dev

staging/Kconfig: Changes to make Matrix driver visible in /dev

BZ: 22055

Change in Kconfig file to support Matrix driver.

Change-Id: Id547461b39cc9d003f7e24067640596672d918eb
Signed-off-by: Ashish K Singh <ashish.k.singh@intel.com>
Reviewed-on: http://android.intel.com:8080/43600
Reviewed-by: Hogander, Jouni <jouni.hogander@intel.com>
Reviewed-by: Monroy, German <german.monroy@intel.com>
Reviewed-by: Koskinen, Ilkka <ilkka.koskinen@intel.com>
Reviewed-by: Gross, Mark <mark.gross@intel.com>
Tested-by: Martin, LoicX <loicx.martin@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>