iio: adc: ad4080: fix AD4880 chip ID

The AD4880 chip ID was incorrectly set to 0x0750. According to the
datasheet, the product ID registers read 0x00 (PRODUCT_ID_H) and 0x59
(PRODUCT_ID_L), giving a combined chip ID of 0x0059. Fix the value to
match the actual hardware.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Author: amiclaus

drivers/iio/adc/ad4080.c

@@ -135,7 +135,7 @@
 #define AD4086_CHIP_ID						0x0056
 #define AD4087_CHIP_ID						0x0057
 #define AD4088_CHIP_ID						0x0058
-#define AD4880_CHIP_ID						0x0750
+#define AD4880_CHIP_ID						0x0059
 #define AD4884_CHIP_ID						0x005C
 
 #define AD4080_MAX_CHANNELS					2