regulator: s2mpa01: 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>
diff --git a/drivers/regulator/s2mpa01.c b/drivers/regulator/s2mpa01.c
index 4acefa6..2263071 100644
--- a/drivers/regulator/s2mpa01.c
+++ b/drivers/regulator/s2mpa01.c
@@ -298,7 +298,7 @@
 	.enable_mask	= S2MPA01_ENABLE_MASK			\
 }
 
-static struct regulator_desc regulators[] = {
+static const struct regulator_desc regulators[] = {
 	regulator_desc_ldo(1, STEP_25_MV),
 	regulator_desc_ldo(2, STEP_50_MV),
 	regulator_desc_ldo(3, STEP_50_MV),