davinci: add platform support for watchdog timer

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h
index 35736ec..584494a 100644
--- a/arch/arm/mach-davinci/clock.h
+++ b/arch/arm/mach-davinci/clock.h
@@ -93,4 +93,7 @@
 	}
 
 int davinci_clk_init(struct davinci_clk *clocks);
+
+extern struct platform_device davinci_wdt_device;
+
 #endif