iio: dac: cio-dac: Fix typo in comment listing supported devices

This driver supports the CIO-DAC08 device and not "CIO-DAC06".
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/20230311002434.8761-1-william.gray@linaro.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/dac/cio-dac.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2016 William Breathitt Gray
  *
  * This driver supports the following Measurement Computing devices: CIO-DAC16,
- * CIO-DAC06, and PC104-DAC06.
+ * CIO-DAC08, and PC104-DAC06.
  */
 #include <linux/bitops.h>
 #include <linux/device.h>