[ARM] Move include/asm-arm/plat-orion to arch/arm/plat-orion/include/plat

This patch performs the equivalent include directory shuffle for
plat-orion, and fixes up all users.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-mv78xx0/irq.c b/arch/arm/mach-mv78xx0/irq.c
index 3198abf..28248d3 100644
--- a/arch/arm/mach-mv78xx0/irq.c
+++ b/arch/arm/mach-mv78xx0/irq.c
@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <mach/mv78xx0.h>
-#include <asm/plat-orion/irq.h>
+#include <plat/irq.h>
 #include "common.h"
 
 void __init mv78xx0_init_irq(void)