adjust page-alloc init function attributes

Index: 2007-11-13/xen/common/page_alloc.c
===================================================================
@@ -503,7 +503,7 @@ static void free_heap_pages(
  * not freeing it to the buddy allocator.
  */
 #define MAX_ORDER_ALIGNED (1UL << (MAX_ORDER))
-void init_heap_pages(
+static void init_heap_pages(
     unsigned int zone, struct page_info *pg, unsigned long nr_pages)
 {
     unsigned int nid_curr, nid_prev;

@@ -701,7 +701,7 @@ void free_xenheap_pages(void *v, unsigne
  * DOMAIN-HEAP SUB-ALLOCATOR
  */
 
-void init_domheap_pages(paddr_t ps, paddr_t pe)
+void __init init_domheap_pages(paddr_t ps, paddr_t pe)
 {
     unsigned long s_tot, e_tot;
     unsigned int zone;