pinctrl: berlin: fix spelling typo in comment

Fix spelling typo in comment.
Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Link: https://lore.kernel.org/r/20220905071300.1832105-1-13667453960@163.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/berlin/berlin.c

@@ -209,7 +209,7 @@ static int berlin_pinctrl_build_state(struct platform_device *pdev)
 
 	for (i = 0; i < pctrl->desc->ngroups; i++) {
 		desc_group = pctrl->desc->groups + i;
-		/* compute the maxiumum number of functions a group can have */
+		/* compute the maximum number of functions a group can have */
 		max_functions += 1 << (desc_group->bit_width + 1);
 	}