ARM: OMAP1: Move most of plat/io.h into local iomap.h

There's no need to have these in plat/io.h.

While at it, clean up the includes to group them
like they typically are grouped.

Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/ams-delta-fiq-handler.S

@@ -15,11 +15,12 @@
 
 #include <linux/linkage.h>
 
-#include <plat/io.h>
 #include <plat/board-ams-delta.h>
 
 #include <mach/ams-delta-fiq.h>
 
+#include "iomap.h"
+
 /*
  * GPIO related definitions, copied from arch/arm/plat-omap/gpio.c.
  * Unfortunately, those were not placed in a separate header file.