[POWERPC] Add __init annotations to reserve_mem() and stabs_alloc()

reserve_mem() and stabs_alloc() are both called only from other __init
routines, so can be marked __init.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/kernel/prom_init.c

@@ -967,7 +967,7 @@ static unsigned long __init prom_next_cell(int s, cell_t **cellp)
  * If problems seem to show up, it would be a good start to track
  * them down.
  */
-static void reserve_mem(u64 base, u64 size)
+static void __init reserve_mem(u64 base, u64 size)
 {
 	u64 top = base + size;
 	unsigned long cnt = RELOC(mem_reserve_cnt);

arch/powerpc/mm/stab.c

@@ -227,7 +227,7 @@ void switch_stab(struct task_struct *tsk, struct mm_struct *mm)
  * the first (bolted) segment, so that do_stab_bolted won't get a
  * recursive segment miss on the segment table itself.
  */
-void stabs_alloc(void)
+void __init stabs_alloc(void)
 {
 	int cpu;