[PATCH] fix standalone inclusion of asm-i386/dma-mapping.h

Without this a usb-storage patch I sent fails on x86 because dma-mapping.h
uses struct device and various VM stuff without proper includes.  It's fine
on ppc at least.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-i386/dma-mapping.h

 #ifndef _ASM_I386_DMA_MAPPING_H
 #define _ASM_I386_DMA_MAPPING_H
 
+#include <linux/device.h>
+#include <linux/mm.h>
+
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <asm/scatterlist.h>