ARM: exynos_defconfig: Enable LEDS for Odroid-XU3/XU4

Odroid XU3 family boards come with RGB LEDs. Enabling LEDS_GPIO and
LEDS_PWM allows monitoring the board alive state (heartbeat) and
MMC/SDcard IO usage.
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
[k.kozlowski: Rewritten the commit message]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

arch/arm/configs/exynos_defconfig

@@ -174,6 +174,12 @@ CONFIG_MMC_SDHCI_S3C_DMA=y
 CONFIG_MMC_DW=y
 CONFIG_MMC_DW_IDMAC=y
 CONFIG_MMC_DW_EXYNOS=y
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_PWM=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_RTC_CLASS=y
 CONFIG_RTC_DRV_MAX77686=y
 CONFIG_RTC_DRV_MAX77802=y