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 <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/power/hibernate_32.c b/arch/x86/power/hibernate_32.c
index 5080c37..f2b6e3f 100644
--- a/arch/x86/power/hibernate_32.c
+++ b/arch/x86/power/hibernate_32.c
@@ -13,7 +13,7 @@
 #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 */
@@ -23,7 +23,7 @@
 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
  */
 
 /*
diff --git a/arch/x86/power/hibernate_64.c b/arch/x86/power/hibernate_64.c
index 05f28f0..b542355 100644
--- a/arch/x86/power/hibernate_64.c
+++ b/arch/x86/power/hibernate_64.c
@@ -18,7 +18,7 @@
 /* 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);
 
 /*