memblock: Annotate memblock functions with __init_memblock

Stephen found

WARNING: mm/built-in.o(.text+0x25ab8): Section mismatch in reference from the function memblock_find_base() to the function .init.text:memblock_find_region()
The function memblock_find_base() references
the function __init memblock_find_region().
This is often because memblock_find_base lacks a __init
annotation or the annotation of memblock_find_region is wrong.

So let memblock_find_region() to use __init_memblock instead of __init
directly.

Also fix one function that did not have __init* to be __init_memblock.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4CB366B1.40405@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

mm/memblock.c

@@ -99,7 +99,7 @@ long __init_memblock memblock_overlaps_region(struct memblock_type *type, phys_a
  * are top-down.
  */
 
-static phys_addr_t __init memblock_find_region(phys_addr_t start, phys_addr_t end,
+static phys_addr_t __init_memblock memblock_find_region(phys_addr_t start, phys_addr_t end,
 					  phys_addr_t size, phys_addr_t align)
 {
 	phys_addr_t base, res_base;
@@ -653,7 +653,7 @@ void __init memblock_enforce_memory_limit(phys_addr_t memory_limit)
 	}
 }
 
-static int memblock_search(struct memblock_type *type, phys_addr_t addr)
+static int __init_memblock memblock_search(struct memblock_type *type, phys_addr_t addr)
 {
 	unsigned int left = 0, right = type->cnt;