[PATCH] rivafb: stricter memory ordering

The more relaxed memory ordering od the __raw_{write,read}b broke things
on ppc in the recent rivafb cleanups.

[ Uglyness alert: only the 8-bit accesses are more strongly serialized. 
  The 16- and 32-bit ones have always been relaxed. Gaah. ]
Signed-off-by: Guido Guenther <agx@sigxcpu.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/riva/riva_hw.h

@@ -75,8 +75,8 @@ typedef unsigned int   U032;
  */
 #include <asm/io.h>
 
-#define NV_WR08(p,i,d)  (__raw_writeb((d), (void __iomem *)(p) + (i)))
-#define NV_RD08(p,i)    (__raw_readb((void __iomem *)(p) + (i)))
+#define NV_WR08(p,i,d)  (writeb((d), (void __iomem *)(p) + (i)))
+#define NV_RD08(p,i)    (readb((void __iomem *)(p) + (i)))
 #define NV_WR16(p,i,d)  (__raw_writew((d), (void __iomem *)(p) + (i)))
 #define NV_RD16(p,i)    (__raw_readw((void __iomem *)(p) + (i)))
 #define NV_WR32(p,i,d)  (__raw_writel((d), (void __iomem *)(p) + (i)))