[MIPS] Fix IP27 build

IP27 does no longer have ZONE_DMA.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/sgi-ip27/ip27-memory.c

@@ -517,7 +517,7 @@ void __init paging_init(void)
 		pfn_t start_pfn = slot_getbasepfn(node, 0);
 		pfn_t end_pfn = node_getmaxclick(node) + 1;
 
-		zones_size[ZONE_DMA] = end_pfn - start_pfn;
+		zones_size[ZONE_NORMAL] = end_pfn - start_pfn;
 		free_area_init_node(node, NODE_DATA(node),
 				zones_size, start_pfn, NULL);