ARM: davinci: da850: add DT boot support

Add support for booting DA850 using flattened device
tree to describe the hardware. At this time only the
very basic bootup using a serial console is supported.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 73067ef..06e0adf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -924,6 +924,7 @@
 	select GENERIC_IRQ_CHIP
 	select HAVE_IDE
 	select NEED_MACH_GPIO_H
+	select USE_OF
 	select ZONE_DMA
 	help
 	  Support for TI's DaVinci platform.