media: ov5640: Add horizontal and vertical totals

All the initialization arrays are changing the horizontal and vertical
totals for some value.

In order to clean up the driver, and since we're going to need that value
later on, let's introduce in the ov5640_mode_info structure the horizontal
and vertical total sizes, and move these out of the bytes array.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>