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/irq.c b/arch/arm/mach-omap1/irq.c
index e5b104b..4448114 100644
--- a/arch/arm/mach-omap1/irq.c
+++ b/arch/arm/mach-omap1/irq.c
@@ -42,11 +42,13 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 
-#include <mach/hardware.h>
 #include <asm/irq.h>
 #include <asm/mach/irq.h>
+
 #include <plat/cpu.h>
 
+#include <mach/hardware.h>
+
 #define IRQ_BANK(irq) ((irq) >> 5)
 #define IRQ_BIT(irq)  ((irq) & 0x1f)