staging: iio: ad7780: 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 <[e-mail]>
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/staging/iio/adc/ad7780.c

···
 };
 
 static const struct iio_info ad7780_info = {
-	.read_raw = &ad7780_read_raw,
+	.read_raw = ad7780_read_raw,
 	.driver_module = THIS_MODULE,
 };