ARM: exynos_defconfig: Enable DMC driver

Enable driver for Exynos5422 Dynamic Memory Controller supporting
dynamic frequency and voltage scaling in Exynos5422 SoCs.
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/configs/exynos_defconfig

@@ -294,6 +294,7 @@ CONFIG_DEVFREQ_GOV_PERFORMANCE=y
 CONFIG_DEVFREQ_GOV_POWERSAVE=y
 CONFIG_DEVFREQ_GOV_USERSPACE=y
 CONFIG_ARM_EXYNOS_BUS_DEVFREQ=y
+CONFIG_EXYNOS5422_DMC=y
 CONFIG_DEVFREQ_EVENT_EXYNOS_NOCP=y
 CONFIG_EXTCON=y
 CONFIG_EXTCON_MAX14577=y