iio: amplifiers: ada4250: move offset_uv in struct

Move offset_uv in struct ada4250_state. This keeps things logically
grouped and reduces holes in the struct.

Signed-off-by: David Lechner <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Link: https://patch.msgid.link/20250611-iio-a[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/amplifiers/ada4250.c

···
 	/* Protect against concurrent accesses to the device and data content */
 	struct mutex		lock;
 	int			avdd_uv;
+	int			offset_uv;
 	u8			bias;
 	u8			gain;
-	int			offset_uv;
 	bool			refbuf_en;
 	__le16			reg_val_16 __aligned(IIO_DMA_MINALIGN);
 };