iio: adc: aspeed: Fix spelling mistake "battey" -> "battery"

There is a spelling mistake in a dev_warn message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20211001120018.17570-1-colin.king@canonical.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/adc/aspeed_adc.c

@@ -580,7 +580,7 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 			}
 		} else
 			dev_warn(&pdev->dev,
-				 "Failed to enable battey-sensing mode\n");
+				 "Failed to enable battery-sensing mode\n");
 	}
 
 	ret = clk_prepare_enable(data->clk_scaler->clk);