Misspelling, missing description.
Fixes the following W=1 kernel build warning(s):
 drivers/iio/dac/ad5064.c:71: warning: bad line:                         internal vref.
 drivers/iio/dac/ad5064.c:83: warning: Function parameter or member 'channels' not described in 'ad5064_chip_info'
 drivers/iio/dac/ad5064.c:125: warning: Function parameter or member 'lock' not described in 'ad5064_state'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200716135928.1456727-20-lee.jones@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
  * struct ad5064_chip_info - chip specific information
  * @shared_vref:       whether the vref supply is shared between channels
  * @internal_vref:     internal reference voltage. 0 if the chip has no
-                       internal vref.
- * @channel:           channel specification
+ *                     internal vref.
+ * @channels:          channel specification
  * @num_channels:      number of channels
  * @regmap_type:       register map layout variant
  */
  * @use_internal_vref: set to true if the internal reference voltage should be
  *                     used.
  * @write:             register write callback
+ * @lock:              maintain consistency between cached and dev state
  * @data:              i2c/spi transfer buffers
  */
 
        bool                            use_internal_vref;
 
        ad5064_write_func               write;
-       /* Lock used to maintain consistency between cached and dev state */
        struct mutex lock;
 
        /*