media: i2c: ov01a10: Change default vblank value to a vblank resulting in 30 fps

media: i2c: ov01a10: Change default vblank value to a vblank resulting in 30 fps

The ov01a10 is quite a small sensor, which does not capture a lot of
light, increase the default vblank so that the sensor runs at 30 fps
by default, doubling the default exposure.

Signed-off-by: Hans de Goede <hansg@kernel.org>
Tested-by: Mehdi Djait <mehdi.djait@linux.intel.com> # Dell XPS 9315
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>