Blackfin: on-chip RTC controller driver

This patch implements the driver necessary use the Analog Devices Blackfin
processor's on-chip RTC controller.

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 95826b9..ef1eae9 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -354,4 +354,14 @@
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-v3020.
 
+config RTC_DRV_BFIN
+	tristate "Blackfin On-Chip RTC"
+	depends on RTC_CLASS && BFIN
+	help
+	  If you say yes here you will get support for the
+	  Blackfin On-Chip Real Time Clock.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rtc-bfin.
+
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