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>
diff --git a/arch/arm/mach-omap1/flash.c b/arch/arm/mach-omap1/flash.c
index 1749cb3..98d29a0 100644
--- a/arch/arm/mach-omap1/flash.c
+++ b/arch/arm/mach-omap1/flash.c
@@ -6,10 +6,10 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/io.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 
-#include <plat/io.h>
 #include <plat/tc.h>
 #include <plat/flash.h>