PCI: scatterlist.h needs types.h

Most architectures' scatterlist.h use the type dma_addr_t, but omit to
include <asm/types.h> which defines it.  This could lead to build failures,
so let's add the missing includes.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/asm-xtensa/scatterlist.h b/include/asm-xtensa/scatterlist.h
index 38a2b9a..ca337a2 100644
--- a/include/asm-xtensa/scatterlist.h
+++ b/include/asm-xtensa/scatterlist.h
@@ -11,6 +11,8 @@
 #ifndef _XTENSA_SCATTERLIST_H
 #define _XTENSA_SCATTERLIST_H
 
+#include <asm/types.h>
+
 struct scatterlist {
 	struct page 	*page;
 	unsigned int	offset;