coccinelle: ifnullfree: add vfree(), kvfree*() functions

Extend the list of free functions with kvfree(), kvfree_sensitive(),
vfree().

Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

scripts/coccinelle/free/ifnullfree.cocci

@@ -20,8 +20,14 @@ expression E;
 - if (E != NULL)
 (
   kfree(E);
+|
+  kvfree(E);
 |
   kfree_sensitive(E);
+|
+  kvfree_sensitive(E, ...);
+|
+  vfree(E);
 |
   debugfs_remove(E);
 |
@@ -42,9 +48,10 @@ position p;
 @@
 
 * if (E != NULL)
-*	\(kfree@p\|kfree_sensitive@p\|debugfs_remove@p\|debugfs_remove_recursive@p\|
+*	\(kfree@p\|kvfree@p\|kfree_sensitive@p\|kvfree_sensitive@p\|vfree@p\|
+*         debugfs_remove@p\|debugfs_remove_recursive@p\|
 *         usb_free_urb@p\|kmem_cache_destroy@p\|mempool_destroy@p\|
-*         dma_pool_destroy@p\)(E);
+*         dma_pool_destroy@p\)(E, ...);
 
 @script:python depends on org@
 p << r.p;