staging:iio:dac:ad5791: Add id entry for the ad5790

The ad5790 has a binary compatible interface to ad5791, so we just have to add
an entry to the drivers device table to add support for it.

Signed-off-by: Lars-Peter Clausen <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/iio/dac/Kconfig

···
 	  module will be called ad5764.
 
 config AD5791
-	tristate "Analog Devices AD5760/AD5780/AD5781/AD5791 DAC SPI driver"
+	tristate "Analog Devices AD5760/AD5780/AD5781/AD5790/AD5791 DAC SPI driver"
 	depends on SPI
 	help
 	  Say yes here to build support for Analog Devices AD5760, AD5780,
-	  AD5781, AD5791 High Resolution Voltage Output Digital to
+	  AD5781, AD5790, AD5791 High Resolution Voltage Output Digital to
 	  Analog Converter.
 
 	  To compile this driver as a module, choose M here: the

drivers/staging/iio/dac/ad5791.c

···
 /*
- * AD5760, AD5780, AD5781, AD5791 Voltage Output Digital to Analog Converter
+ * AD5760, AD5780, AD5781, AD5790, AD5791 Voltage Output Digital to Analog
+ * Converter
  *
  * Copyright 2011 Analog Devices Inc.
  *
···
 	{"ad5760", ID_AD5760},
 	{"ad5780", ID_AD5780},
 	{"ad5781", ID_AD5781},
+	{"ad5790", ID_AD5791},
 	{"ad5791", ID_AD5791},
 	{}
 };
···
 module_exit(ad5791_spi_exit);
 
 MODULE_AUTHOR("Michael Hennerich <[e-mail]>");
-MODULE_DESCRIPTION("Analog Devices AD5760/AD5780/AD5781/AD5791 DAC");
+MODULE_DESCRIPTION("Analog Devices AD5760/AD5780/AD5781/AD5790/AD5791 DAC");
 MODULE_LICENSE("GPL v2");