pinctrl: mediatek: fix coding style

Fix Camel spelling coding style to avoid checkpatch
warning in a following patch.

Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20210924080632.28410-4-zhiyong.tao@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mediatek/pinctrl-paris.c

@@ -577,7 +577,7 @@ static int mtk_hw_get_value_wrap(struct mtk_pinctrl *hw, unsigned int gpio, int
 	mtk_hw_get_value_wrap(hw, gpio, PINCTRL_PIN_REG_DRV)
 
 ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
-	unsigned int gpio, char *buf, unsigned int bufLen)
+	unsigned int gpio, char *buf, unsigned int buf_len)
 {
 	int pinmux, pullup, pullen, len = 0, r1 = -1, r0 = -1;
 	const struct mtk_pin_desc *desc;
@@ -610,7 +610,7 @@ ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
 	} else if (pullen != MTK_DISABLE && pullen != MTK_ENABLE) {
 		pullen = 0;
 	}
-	len += scnprintf(buf + len, bufLen - len,
+	len += scnprintf(buf + len, buf_len - len,
 			"%03d: %1d%1d%1d%1d%02d%1d%1d%1d%1d",
 			gpio,
 			pinmux,
@@ -624,10 +624,10 @@ ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
 			pullup);
 
 	if (r1 != -1) {
-		len += scnprintf(buf + len, bufLen - len, " (%1d %1d)\n",
+		len += scnprintf(buf + len, buf_len - len, " (%1d %1d)\n",
 			r1, r0);
 	} else {
-		len += scnprintf(buf + len, bufLen - len, "\n");
+		len += scnprintf(buf + len, buf_len - len, "\n");
 	}
 
 	return len;