media: i2c: ds90ub913: Align ub913_read() with other similar functions

media: i2c: ds90ub913: Align ub913_read() with other similar functions

Adjust the ub913_read() to have similar form than the other similar
functions in ub9xx drivers. This makes it easier to deal with all the
read/write functions with a semantic patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>