[ARM] Fix arch-realview/system.h to use __io_address()

Move __io_address to arch-realview/hardware.h, drop core.h from platsmp.c
and localtimer.c, and include asm/io.h where required.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index d83e8ba..c06e604 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -26,8 +26,6 @@
 #include <asm/leds.h>
 #include <asm/io.h>
 
-#define __io_address(n)		__io(IO_ADDRESS(n))
-
 extern struct sys_timer realview_timer;
 
 #define AMBA_DEVICE(name,busid,base,plat)			\
diff --git a/arch/arm/mach-realview/localtimer.c b/arch/arm/mach-realview/localtimer.c
index 5e917e3..c9d7c59 100644
--- a/arch/arm/mach-realview/localtimer.c
+++ b/arch/arm/mach-realview/localtimer.c
@@ -21,8 +21,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 
-#include "core.h"
-
 #define TWD_BASE(cpu)	(__io_address(REALVIEW_TWD_BASE) + \
 			 ((cpu) * REALVIEW_TWD_SIZE))
 
diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index 0c7d4ac..a8fbd76d 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -17,8 +17,7 @@
 #include <asm/cacheflush.h>
 #include <asm/hardware/arm_scu.h>
 #include <asm/hardware.h>
-
-#include "core.h"
+#include <asm/io.h>
 
 extern void realview_secondary_startup(void);