[MIPS] Malta: Fix build errors for 64-bit kernels

Fix 64-bit Malta by using CKSEG0ADDR and correct casts.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/gic.h b/include/asm-mips/gic.h
index 3a492f2..954807d 100644
--- a/include/asm-mips/gic.h
+++ b/include/asm-mips/gic.h
@@ -24,8 +24,8 @@
 
 #define MSK(n) ((1 << (n)) - 1)
 #define REG32(addr)		(*(volatile unsigned int *) (addr))
-#define REG(base, offs)		REG32((unsigned int)(base) + offs##_##OFS)
-#define REGP(base, phys)	REG32((unsigned int)(base) + (phys))
+#define REG(base, offs)		REG32((unsigned long)(base) + offs##_##OFS)
+#define REGP(base, phys)	REG32((unsigned long)(base) + (phys))
 
 /* Accessors */
 #define GIC_REG(segment, offset) \