regulator: keep index within bounds in da9034_get_ldo12_voltage()

If selector equals ARRAY_SIZE(da9034_ldo12_data), that is one too
large already.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

drivers/regulator/da903x.c

@@ -331,7 +331,7 @@ static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
 static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
 				     unsigned selector)
 {
-	if (selector > ARRAY_SIZE(da9034_ldo12_data))
+	if (selector >= ARRAY_SIZE(da9034_ldo12_data))
 		return -EINVAL;
 	return da9034_ldo12_data[selector] * 1000;
 }