ov8830: add first sensor mode for 800x600 resolution

ov8830: add first sensor mode for 800x600 resolution

BZ: 16972

Add initial mode for the ov8830 sensor, 800x600 pixels,
2 lanes, 30 fps. Remove also settings and code which were
inherited from the mt9e013 driver.

Change-Id: Ia01e303a1b916595b79576a7b22d9cf4fcf89e4b
Signed-off-by: Tuukka Toivonen <tuukka.toivonen@intel.com>
Reviewed-on: http://android.intel.com:8080/32613
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>