hwmon: (adt7310) Fix sparse warning

Fix: drivers/hwmon/adt7310.c:51:16: sparse: cast to restricted __be16

Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/adt7310.c

@@ -48,7 +48,7 @@ static int adt7310_spi_read_word(struct device *dev, u8 reg)
 	if (ret < 0)
 		return ret;
 
-	return be16_to_cpu(ret);
+	return be16_to_cpu((__force __be16)ret);
 }
 
 static int adt7310_spi_write_word(struct device *dev, u8 reg, u16 data)