staging: IIO: DAC: Add support for the AD5543/AD5553

Add support for the AD5543/AD5553 SPI 16-/14-Bit DACs
Fix typo in kconfig description

Changes since V1:
reorder Kconfig help text
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/dac/Kconfig

@@ -11,11 +11,11 @@ config AD5624R_SPI
 	  AD5664R convertors (DAC). This driver uses the common SPI interface.
 
 config AD5446
-	tristate "Analog Devices AD5444/6, AD5620/40/60 and AD5541A/12A DAC SPI driver"
+	tristate "Analog Devices AD5444/6, AD5620/40/60 and AD5542A/12A DAC SPI driver"
 	depends on SPI
 	help
 	  Say yes here to build support for Analog Devices AD5444, AD5446,
-	  AD5620, AD5640, AD5660 and AD5541A, AD5512A DACs.
+	  AD5512A, AD5542A, AD5543, AD5553, AD5620, AD5640, AD5660 DACs.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5446.

drivers/staging/iio/dac/ad5446.c

@@ -132,12 +132,24 @@ static const struct ad5446_chip_info ad5446_chip_info_tbl[] = {
 		.left_shift = 0,
 		.store_sample = ad5542_store_sample,
 	},
+	[ID_AD5543] = {
+		.bits = 16,
+		.storagebits = 16,
+		.left_shift = 0,
+		.store_sample = ad5542_store_sample,
+	},
 	[ID_AD5512A] = {
 		.bits = 12,
 		.storagebits = 16,
 		.left_shift = 4,
 		.store_sample = ad5542_store_sample,
 	},
+	[ID_AD5553] = {
+		.bits = 14,
+		.storagebits = 16,
+		.left_shift = 0,
+		.store_sample = ad5542_store_sample,
+	},
 	[ID_AD5620_2500] = {
 		.bits = 12,
 		.storagebits = 16,

drivers/staging/iio/dac/ad5446.h

@@ -84,7 +84,9 @@ enum ad5446_supported_device_ids {
 	ID_AD5444,
 	ID_AD5446,
 	ID_AD5542A,
+	ID_AD5543,
 	ID_AD5512A,
+	ID_AD5553,
 	ID_AD5620_2500,
 	ID_AD5620_1250,
 	ID_AD5640_2500,