[WATCHDOG] davinci watchdog driver

Add watchdog support for TI Davinci DM644x/DM646x processors.

Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com> 
Signed-off-by: Kevin Hilman <khilman@mvista.com> 
Signed-off-by: Wim Van Sebroeck <wim@iguana.be> 

diff --git a/drivers/char/watchdog/Kconfig b/drivers/char/watchdog/Kconfig
index 2dfaf96..d9c2eb0 100644
--- a/drivers/char/watchdog/Kconfig
+++ b/drivers/char/watchdog/Kconfig
@@ -203,6 +203,18 @@
 	  operating as an Root Complex and/or Central Resource, the PCI-X
 	  and/or PCIe busses will also be reset.  THIS IS A VERY BIG HAMMER.
 
+config DAVINCI_WATCHDOG
+	tristate "DaVinci watchdog"
+	depends on WATCHDOG && ARCH_DAVINCI
+	help
+	  Say Y here if to include support for the watchdog timer
+	  in the DaVinci DM644x/DM646x processors.
+	  To compile this driver as a module, choose M here: the
+	  module will be called davinci_wdt.
+
+	  NOTE: once enabled, this timer cannot be disabled.
+	  Say N if you are unsure.
+
 # AVR32 Architecture
 
 config AT32AP700X_WDT