media: i2c: ds90ub9xx: Add err parameter to read/write funcs

media: i2c: ds90ub9xx: Add err parameter to read/write funcs

To make future error handling in the drivers easier, add "int *err"
parameter to all the i2c register access functions. It functions the
same was as with e.g. CCI reg write/read helpers.

This was accomplished with the following semantic patch:

  @@
  identifier FUNC =~ "^ub9.._(rxport_|txport_|ind_)?(read|write|update_bits)(16|_ind)?$";
  @@
   	FUNC(...
  +	, int *err
   	) {
   		...
   		int ret;
  +
  +		if (err && *err)
  +			return *err;

   		...

  +		if (ret && err)
  +			*err = ret;
  +
   		return ret;
   	}

  @@
  identifier FUNC =~ "^ub9.._(rxport_|txport_|ind_)?(read|write|update_bits)(16|_ind)?$";
  @@
  	FUNC(...
  +		, NULL
  	)

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>