rtc: kconfig: fix up dependency for ab8500

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/Kconfig

@@ -738,6 +738,7 @@ config RTC_DRV_AB3100
 config RTC_DRV_AB8500
 	tristate "ST-Ericsson AB8500 RTC"
 	depends on AB8500_CORE
+	select RTC_INTF_DEV
 	select RTC_INTF_DEV_UIE_EMUL
 	help
 	  Select this to enable the ST-Ericsson AB8500 power management IC RTC