staging: iio: ad7192: Remove exceptional & on function name

Remove & from function pointers to conform to the style found elsewhere
in the file.  Done using the following semantic patch

// <smpl>
@r@
identifier f;
@@

f(...) { ... }
@@
identifier r.f;
@@

- &f
+ f
// </smpl>
Signed-off-by: simran singhal <singhalsimran0@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

drivers/staging/iio/adc/ad7192.c

@@ -564,18 +564,18 @@ static int ad7192_write_raw_get_fmt(struct iio_dev *indio_dev,
 }
 
 static const struct iio_info ad7192_info = {
-	.read_raw = &ad7192_read_raw,
-	.write_raw = &ad7192_write_raw,
-	.write_raw_get_fmt = &ad7192_write_raw_get_fmt,
+	.read_raw = ad7192_read_raw,
+	.write_raw = ad7192_write_raw,
+	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
 	.attrs = &ad7192_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
 	.driver_module = THIS_MODULE,
 };
 
 static const struct iio_info ad7195_info = {
-	.read_raw = &ad7192_read_raw,
-	.write_raw = &ad7192_write_raw,
-	.write_raw_get_fmt = &ad7192_write_raw_get_fmt,
+	.read_raw = ad7192_read_raw,
+	.write_raw = ad7192_write_raw,
+	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
 	.attrs = &ad7195_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
 	.driver_module = THIS_MODULE,