Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 5a30ad5..27e7fa3 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -444,8 +444,8 @@
 	return next_node(nid, node_states[N_MEMORY]);
 }
 
-extern int nr_node_ids;
-extern int nr_online_nodes;
+extern unsigned int nr_node_ids;
+extern unsigned int nr_online_nodes;
 
 static inline void node_set_online(int nid)
 {
@@ -485,8 +485,8 @@
 #define first_online_node	0
 #define first_memory_node	0
 #define next_online_node(nid)	(MAX_NUMNODES)
-#define nr_node_ids		1
-#define nr_online_nodes		1
+#define nr_node_ids		1U
+#define nr_online_nodes		1U
 
 #define node_set_online(node)	   node_set_state((node), N_ONLINE)
 #define node_set_offline(node)	   node_clear_state((node), N_ONLINE)