am 184eecf0: am 4ecbda41: Merge "Add list_add_head to libcutils"

* commit '184eecf017b847bcb6999919f5aa4628521aca2d':
  Add list_add_head to libcutils
diff --git a/include/cutils/list.h b/include/cutils/list.h
index 945729a..6e94ddf 100644
--- a/include/cutils/list.h
+++ b/include/cutils/list.h
@@ -63,6 +63,14 @@
     head->prev = item;
 }
 
+static inline void list_add_head(struct listnode *head, struct listnode *item)
+{
+    item->next = head->next;
+    item->prev = head;
+    head->next->prev = item;
+    head->next = item;
+}
+
 static inline void list_remove(struct listnode *item)
 {
     item->next->prev = item->prev;