x86 PM: update stale comments

In some suspend and hibernation files in arch/x86/power there are
comments referring to arch/x86-64 and arch/i386 . Update them to
reflect the current code layout.

Signed-off-by: Rafael J. Wysocki <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>

arch/x86/power/hibernate_32.c

···
 #include <asm/page.h>
 #include <asm/pgtable.h>
 
-/* Defined in arch/i386/power/swsusp.S */
+/* Defined in hibernate_asm_32.S */
 extern int restore_image(void);
 
 /* References to section boundaries */
···
 pgd_t *resume_pg_dir;
 
 /* The following three functions are based on the analogous code in
- * arch/i386/mm/init.c
+ * arch/x86/mm/init_32.c
  */
 
 /*

arch/x86/power/hibernate_64.c

···
 /* References to section boundaries */
 extern const void __nosave_begin, __nosave_end;
 
-/* Defined in arch/x86_64/kernel/suspend_asm.S */
+/* Defined in hibernate_asm_64.S */
 extern int restore_image(void);
 
 /*