Revert "xen/grant-table: Avoid m2p_override during mapping"

This reverts commit 08ece5bb2312b4510b161a6ef6682f37f4eac8a1.

As it breaks ARM builds and needs more attention
on the ARM side.

Acked-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h
index 7ad033d..a5af2a2 100644
--- a/include/xen/grant_table.h
+++ b/include/xen/grant_table.h
@@ -191,15 +191,11 @@
 #define gnttab_map_vaddr(map) ((void *)(map.host_virt_addr))
 
 int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops,
+		    struct gnttab_map_grant_ref *kmap_ops,
 		    struct page **pages, unsigned int count);
-int gnttab_map_refs_userspace(struct gnttab_map_grant_ref *map_ops,
-			      struct gnttab_map_grant_ref *kmap_ops,
-			      struct page **pages, unsigned int count);
 int gnttab_unmap_refs(struct gnttab_unmap_grant_ref *unmap_ops,
+		      struct gnttab_map_grant_ref *kunmap_ops,
 		      struct page **pages, unsigned int count);
-int gnttab_unmap_refs_userspace(struct gnttab_unmap_grant_ref *unmap_ops,
-				struct gnttab_map_grant_ref *kunmap_ops,
-				struct page **pages, unsigned int count);
 
 /* Perform a batch of grant map/copy operations. Retry every batch slot
  * for which the hypervisor returns GNTST_eagain. This is typically due