ARM: exynos_defconfig: Enable S2MPS11 voltage regulator

S2MPS11 voltage regulator is commonly used on the latest Exynos
boards like SMDK5420, Arndale-Octa, etc. Hence it makes sense to
enable it like S5M8767A voltage regulator.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/configs/exynos_defconfig

@@ -79,6 +79,7 @@ CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_GPIO=y
 CONFIG_REGULATOR_MAX8997=y
 CONFIG_REGULATOR_MAX77686=y
+CONFIG_REGULATOR_S2MPS11=y
 CONFIG_REGULATOR_S5M8767=y
 CONFIG_REGULATOR_TPS65090=y
 CONFIG_FB=y