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/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
index 4bea182..11f3960 100644
--- a/include/rdma/ib_verbs.h
+++ b/include/rdma/ib_verbs.h
@@ -48,9 +48,9 @@
 #include <linux/kref.h>
 #include <linux/list.h>
 #include <linux/rwsem.h>
+#include <linux/scatterlist.h>
 
 #include <asm/atomic.h>
-#include <asm/scatterlist.h>
 #include <asm/uaccess.h>
 
 union ib_gid {