Memoryless nodes: All memory is normal memory if we do not support HIGHMEM

It seems that we only scan through zones to set N_NORMAL_MEMORY if
CONFIG_HIGHMEM and CONFIG_NUMA are set. We need to set N_NORMAL_MEMORY
in the !CONFIG_HIGHMEM case.

Signed-off-by: Christoph Lameter <clameter@sgi.com>

Index: linux-2.6/mm/page_alloc.c
===================================================================
--- linux-2.6.orig/mm/page_alloc.c	2008-01-18 14:08:41.000000000 -0800
+++ linux-2.6/mm/page_alloc.c	2008-01-18 14:13:34.000000000 -0800
@@ -3812,7 +3812,6 @@ restart:
 /* Any regular memory on that node ? */
 static void check_for_regular_memory(pg_data_t *pgdat)
 {
-#ifdef CONFIG_HIGHMEM
 	enum zone_type zone_type;
 
 	for (zone_type = 0; zone_type <= ZONE_NORMAL; zone_type++) {
@@ -3820,7 +3819,6 @@ static void check_for_regular_memory(pg_
 		if (zone->present_pages)
 			node_set_state(zone_to_nid(zone), N_NORMAL_MEMORY);
 	}
-#endif
 }
 
 /**