x86: move save_mr() into .meminit.text

Impact: cleanup, save memory

The function is only being called from boot or memory hotplug paths.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
LKML-Reference: <49B910B6.76E4.0078.0@novell.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/mm/init.c

@@ -94,9 +94,9 @@ struct map_range {
 #define NR_RANGE_MR 5
 #endif
 
-static int save_mr(struct map_range *mr, int nr_range,
-		   unsigned long start_pfn, unsigned long end_pfn,
-		   unsigned long page_size_mask)
+static int __meminit save_mr(struct map_range *mr, int nr_range,
+			     unsigned long start_pfn, unsigned long end_pfn,
+			     unsigned long page_size_mask)
 {
 	if (start_pfn < end_pfn) {
 		if (nr_range >= NR_RANGE_MR)