[PATCH] ppc64: Updated Olof misc updates 3/3

Replace some of the hard-coded constants with PAGE_SIZE/SHIFT/ORDER where
appropriate.

Likewise, in a couple of places it doesn't make sense to base some
allocations on page size when all that's required is a constant 4K,
etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 737e85a..d2b0b79 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -30,7 +30,7 @@
 
 /* Location of cpu0's segment table */
 #define STAB0_PAGE	0x6
-#define STAB0_PHYS_ADDR	(STAB0_PAGE<<PAGE_SHIFT)
+#define STAB0_PHYS_ADDR	(STAB0_PAGE<<12)
 
 #ifndef __ASSEMBLY__
 extern char initial_stab[];