pinctrl: Fix spelling mistake "atleast" -> "at least"

There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210826123516.14441-1-colin.king@canonical.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-st.c

@@ -1588,7 +1588,7 @@ static int st_pctl_probe_dt(struct platform_device *pdev,
 
 	st_pctl_dt_child_count(info, np);
 	if (!info->nbanks) {
-		dev_err(&pdev->dev, "you need atleast one gpio bank\n");
+		dev_err(&pdev->dev, "you need at least one gpio bank\n");
 		return -EINVAL;
 	}