ARM: OMAP4: Add minimal support for omap4

This patch adds the support for OMAP4. The platform and machine specific
headers and sources updated for OMAP4430 SDP platform.

OMAP4430 is Texas Instrument's SOC based on ARM Cortex-A9 SMP architecture.
It's a dual core SOC with GIC used for interrupt handling and SCU for cache
coherency.

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

arch/arm/mach-omap2/id.c

@@ -6,6 +6,9 @@
  * Copyright (C) 2005 Nokia Corporation
  * Written by Tony Lindgren <tony@atomide.com>
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
@@ -200,7 +203,10 @@ void __init omap2_check_revision(void)
 		omap24xx_check_revision();
 	else if (cpu_is_omap34xx())
 		omap34xx_check_revision();
-	else
+	else if (cpu_is_omap44xx()) {
+		printk(KERN_INFO "FIXME: CPU revision = OMAP4430\n");
+		return;
+	} else
 		pr_err("OMAP revision unknown, please fix!\n");
 
 	/*