ov8830: adjust manual white balance gains

ov8830: adjust manual white balance gains

BZ: 26645

Adjust white balance gains to red: 1.43 green: 1.0 blue: 1.56

Change-Id: I869f4ead72f0164be17d74c0f501ec6ac4972bea
Signed-off-by: Tuukka Toivonen <tuukka.toivonen@intel.com>
Reviewed-on: http://android.intel.com:8080/37842
Reviewed-by: Monroy, German <german.monroy@intel.com>
Reviewed-by: Koski, Anttu <anttu.koski@intel.com>
Tested-by: Koski, Anttu <anttu.koski@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>