iio: dac: ad5686: refactor device list and file header comments

Refactor device list in Kconfig, sorting devices by channel count. Also,
remove device description from file headers. One can rely on the ID
table(s) to check for supported devices. AD5337R is ommited as it does
not seem to exist, i.e. its documentation could not be found.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

drivers/iio/dac/Kconfig

@@ -251,9 +251,16 @@ config AD5686_SPI
 	depends on SPI
 	select AD5686
 	help
-	  Say yes here to build support for Analog Devices AD5672R, AD5674R,
-	  AD5676, AD5676R, AD5679R, AD5684, AD5684R, AD5684R, AD5685R, AD5686,
-	  AD5686R Voltage Output Digital to Analog Converter.
+	  Say yes here to build support for Analog Devices Voltage Output
+	  Digital to Analog Converters:
+	  - Single-channel:
+	    AD5310R, AD5681R, AD5682R, AD5683, AD5683R
+	  - Quad-channel:
+	    AD5684, AD5684R, AD5685R, AD5686, AD5686R
+	  - 8-channel:
+	    AD5672R, AD5676, AD5676R
+	  - 16-channel:
+	    AD5674R, AD5679R
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5686.
@@ -263,10 +270,18 @@ config AD5696_I2C
 	depends on I2C
 	select AD5686
 	help
-	  Say yes here to build support for Analog Devices AD5311R, AD5337,
-	  AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693,
-	  AD5693R, AD5694, AD5694R, AD5695R, AD5696, and AD5696R Digital to
-	  Analog converters.
+	  Say yes here to build support for Analog Devices Voltage Output
+	  Digital to Analog Converters:
+	  - Single-channel:
+	    AD5311R, AD5691R, AD5692R, AD5693, AD5693R
+	  - Dual-channel:
+	    AD5338R
+	  - Quad-channel:
+	    AD5694, AD5694R, AD5695R, AD5696, AD5696R
+	  - 8-channel:
+	    AD5671R, AD5675R
+	  - 16-channel:
+	    AD5673R, AD5677R
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad5696.

drivers/iio/dac/ad5686-spi.c

@@ -1,9 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * AD5672R, AD5674R, AD5676, AD5676R, AD5679R,
- * AD5681R, AD5682R, AD5683, AD5683R, AD5684,
- * AD5684R, AD5685R, AD5686, AD5686R
- * Digital to analog converters driver
+ * SPI driver for AD5686 and similar Digital to Analog Converters
  *
  * Copyright 2018 Analog Devices Inc.
  */

drivers/iio/dac/ad5686.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * AD5686R, AD5685R, AD5684R Digital to analog converters  driver
+ * Core driver for AD5686 and similar Digital to Analog Converters
  *
  * Copyright 2011 Analog Devices Inc.
  */

drivers/iio/dac/ad5696-i2c.c

@@ -1,8 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693,
- * AD5693R, AD5694, AD5694R, AD5695R, AD5696, AD5696R
- * Digital to analog converters driver
+ * I2C driver for AD5696 and similar Digital to Analog Converters
  *
  * Copyright 2018 Analog Devices Inc.
  */