kernel/resource.c: fix new kernel-doc warning

Fix kernel-doc warning for new function:

Warning(linux-2.6.27-rc5-git2//kernel/resource.c:448): No description found for parameter 'root'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/resource.c

@@ -438,7 +438,7 @@ int insert_resource(struct resource *parent, struct resource *new)
 
 /**
  * insert_resource_expand_to_fit - Insert a resource into the resource tree
- * @parent: parent of the new resource
+ * @root: root resource descriptor
  * @new: new resource to insert
  *
  * Insert a resource into the resource tree, possibly expanding it in order