regulator: max77693: Make regulator_desc array const

The regulator_register() expects array of 'regulator_desc' to be const.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/max77693.c

@@ -139,7 +139,7 @@ static struct regulator_ops max77693_charger_ops = {
 	.enable_mask	= SAFEOUT_CTRL_ENSAFEOUT##_num##_MASK ,	\
 }
 
-static struct regulator_desc regulators[] = {
+static const struct regulator_desc regulators[] = {
 	regulator_desc_esafeout(1),
 	regulator_desc_esafeout(2),
 	{