memblock: Export MEMBLOCK_ERROR

will used by x86 memblock_x86_find_in_range_node and nobootmem replacement
Signed-off-by: NYinghai Lu <yinghai@kernel.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

include/linux/memblock.h

@@ -18,7 +18,8 @@
 
 #include <asm/memblock.h>
 
-#define INIT_MEMBLOCK_REGIONS 128
+#define INIT_MEMBLOCK_REGIONS	128
+#define MEMBLOCK_ERROR		(~(phys_addr_t)0)
 
 struct memblock_region {
 	phys_addr_t base;

mm/memblock.c

@@ -27,8 +27,6 @@ int memblock_can_resize;
 static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS + 1];
 static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS + 1];
 
-#define MEMBLOCK_ERROR	(~(phys_addr_t)0)
-
 /* inline so we don't get a warning when pr_debug is compiled out */
 static inline const char *memblock_type_name(struct memblock_type *type)
 {