ctp_defconfig, mfld_defconfig: enable platform-specific camera drivers

ctp_defconfig, mfld_defconfig: enable platform-specific camera drivers

BZ: 27473

Enable camera related subdevices (primary camera sensor, secondary
camera sensor, and flash driver) for Medfield and Clovertrail.

Change-Id: Idfb0ab40200f46a057a9957f966131f1830824ae
Signed-off-by: Tuukka Toivonen <tuukka.toivonen@intel.com>
Reviewed-on: http://android.intel.com:8080/42262
Reviewed-by: Koski, Anttu <anttu.koski@intel.com>
Tested-by: Koski, Anttu <anttu.koski@intel.com>
Reviewed-by: Gao, Bin <bin.gao@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>