ARM: bcm283x: Move BCM283x_BASE to a global variable

We move the per SOC define BCM283x_BASE to a global variable.
This is a first step to provide a single binary for several bcm283x
SoCs.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/arch/arm/mach-bcm283x/include/mach/wdog.h b/arch/arm/mach-bcm283x/include/mach/wdog.h
index 8292b3c..9942666 100644
--- a/arch/arm/mach-bcm283x/include/mach/wdog.h
+++ b/arch/arm/mach-bcm283x/include/mach/wdog.h
@@ -6,7 +6,10 @@
 #ifndef _BCM2835_WDOG_H
 #define _BCM2835_WDOG_H
 
-#define BCM2835_WDOG_PHYSADDR	(CONFIG_BCM283x_BASE + 0x00100000)
+#include <asm/arch/base.h>
+
+#define BCM2835_WDOG_PHYSADDR ({ BUG_ON(!rpi_bcm283x_base); \
+				 rpi_bcm283x_base + 0x00100000; })
 
 struct bcm2835_wdog_regs {
 	u32 unknown0[7];