gpio: bd70528: fix spelling misstake "debouce" -> "debounce"

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/20190628161419.26439-1-colin.king@canonical.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-bd70528.c

@@ -36,7 +36,7 @@ static int bd70528_set_debounce(struct bd70528_gpio *bdgpio,
 		break;
 	default:
 		dev_err(bdgpio->chip.dev,
-			"Invalid debouce value %u\n", debounce);
+			"Invalid debounce value %u\n", debounce);
 		return -EINVAL;
 	}
 	return regmap_update_bits(bdgpio->chip.regmap, GPIO_IN_REG(offset),