cleanup asm/scatterlist.h includes

Not architecture specific code should not #include <asm/scatterlist.h>.

This patch therefore either replaces them with
#include <linux/scatterlist.h> or simply removes them if they were
unused.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 8dda2d6..a466c2c 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -36,7 +36,7 @@
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_transport_sas.h>
-#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
 
 struct block_device;