ARM: exynos_defconfig: Add MAX8998 RTC and charger drivers

Add RTC and charger drivers for MAX8998 chip used on Samsung UniversalC210
board.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/configs/exynos_defconfig

@@ -145,6 +145,7 @@ CONFIG_BATTERY_MAX17042=y
 CONFIG_CHARGER_MAX14577=y
 CONFIG_CHARGER_MAX77693=y
 CONFIG_CHARGER_MAX8997=y
+CONFIG_CHARGER_MAX8998=y
 CONFIG_CHARGER_TPS65090=y
 CONFIG_SENSORS_LM90=y
 CONFIG_SENSORS_NTC_THERMISTOR=y
@@ -273,6 +274,7 @@ CONFIG_LEDS_MAX77693=y
 CONFIG_LEDS_MAX8997=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_MAX8998=y
 CONFIG_RTC_DRV_MAX8997=y
 CONFIG_RTC_DRV_MAX77686=y
 CONFIG_RTC_DRV_S5M=y