staging: iio: adc: new driver for AD7816 devices

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/adc/Kconfig

@@ -106,3 +106,10 @@ config AD7745
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad7745.
+
+config AD7816
+	tristate "Analog Devices AD7816/7/8 temperature sensor and ADC driver"
+	depends on SPI
+	help
+	  Say yes here to build support for Analog Devices AD7816/7/8
+	  temperature sensors and ADC.

drivers/staging/iio/adc/Makefile

@@ -21,3 +21,4 @@ obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7298) += ad7298.o
 obj-$(CONFIG_AD7314) += ad7314.o
 obj-$(CONFIG_AD7745) += ad7745.o
+obj-$(CONFIG_AD7816) += ad7816.o