x86 PM: consolidate suspend and hibernation code

Move the hibernation-specific code from arch/x86/power/suspend_64.c
to a separate file (hibernate_64.c) and the CPU-handling code to
cpu_64.c (in line with the corresponding 32-bit code).

Simplify arch/x86/power/Makefile .

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/power/Makefile b/arch/x86/power/Makefile
index 2c95118..9ff4d5b 100644
--- a/arch/x86/power/Makefile
+++ b/arch/x86/power/Makefile
@@ -1,7 +1,2 @@
-ifeq ($(CONFIG_X86_64),y)
-        obj-$(CONFIG_PM)		+= suspend_64.o
-        obj-$(CONFIG_HIBERNATION)	+= hibernate_asm_64.o
-else
-	obj-$(CONFIG_PM)		+= cpu_32.o
-	obj-$(CONFIG_HIBERNATION)	+= hibernate_32.o hibernate_asm_32.o
-endif
+obj-$(CONFIG_PM_SLEEP)		+= cpu_$(BITS).o
+obj-$(CONFIG_HIBERNATION)	+= hibernate_$(BITS).o hibernate_asm_$(BITS).o