iio: adc: ad9467: fix ad9434 vref mask

The mask setting is 5 bits wide for the ad9434
(ref. data sheet register 0x18 FLEX_VREF). Apparently the settings
from ad9265 were copied by mistake when support for the device was added
to the driver.

Fixes: 4606d0f4b05f ("iio: adc: ad9467: add support for AD9434 high-speed ADC")
Reviewed-by: Andy Shevchenko <[e-mail]>
Reviewed-by: Nuno Sá <[e-mail]>
Reviewed-by: David Lechner <[e-mail]>
Signed-off-by: Tomas Melin <[e-mail]>
Cc: <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/adc/ad9467.c

···
 
 #define CHIPID_AD9434			0x6A
 #define AD9434_DEF_OUTPUT_MODE		0x00
-#define AD9434_REG_VREF_MASK		0xC0
+#define AD9434_REG_VREF_MASK		GENMASK(4, 0)
 
 /*
  * Analog Devices AD9467 16-Bit, 200/250 MSPS ADC