sh: rtc-generic support.

This adds rtc-generic support for SUPERH32.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 1647489..9db02ce 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -30,6 +30,7 @@
 	select HAVE_DYNAMIC_FTRACE
 	select HAVE_ARCH_KGDB
 	select ARCH_HIBERNATION_POSSIBLE if MMU
+	select RTC_LIB
 
 config SUPERH64
 	def_bool ARCH = "sh64"