ARM: OMAP4: Add support for 4430 SDP

This patch updates the Makefile and Kconfig entries for OMAP4. The OMAP4430 SDP
board file supports only minimal set of drivers.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/Kconfig

@@ -25,7 +25,7 @@ config ARCH_OMAP3430
 	select ARCH_OMAP_OTG
 
 comment "OMAP Board Type"
-	depends on ARCH_OMAP2 || ARCH_OMAP3
+	depends on ARCH_OMAP2 || ARCH_OMAP3 || ARCH_OMAP4
 
 config MACH_OMAP_GENERIC
 	bool "Generic OMAP board"
@@ -75,3 +75,7 @@ config MACH_NOKIA_RX51
 config MACH_OMAP_ZOOM2
 	bool "OMAP3 Zoom2 board"
 	depends on ARCH_OMAP3 && ARCH_OMAP34XX
+
+config MACH_OMAP_4430SDP
+	bool "OMAP 4430 SDP board"
+	depends on ARCH_OMAP4