m68k: remove unused includes from dma.c

dma.c doesn't need most of the headers it includes.  Also there is
no point in undefining the DEBUG symbol given that it isn't used
anywhere in this small file.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Greg Ungerer <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Tested-by: Greg Ungerer <[email protected]>

Author: Christoph Hellwig

arch/m68k/kernel/dma.c

@@ -4,17 +4,8 @@
  * for more details.
  */
 
-#undef DEBUG
-
 #include <linux/dma-map-ops.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/scatterlist.h>
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-#include <linux/export.h>
-
 #include <asm/cacheflush.h>
 
 #ifndef CONFIG_COLDFIRE