x86_64: prepare shared kernel/smpboot.c

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86_64/kernel/Makefile

@@ -20,7 +20,7 @@ obj-$(CONFIG_ACPI)		+= acpi/
 obj-$(CONFIG_X86_MSR)		+= msr.o
 obj-$(CONFIG_MICROCODE)		+= microcode.o
 obj-$(CONFIG_X86_CPUID)		+= cpuid.o
-obj-$(CONFIG_SMP)		+= smp_64.o smpboot.o trampoline.o tsc_sync.o
+obj-$(CONFIG_SMP)		+= smp_64.o smpboot_64.o trampoline.o tsc_sync.o
 obj-y				+= apic_64.o  nmi_64.o
 obj-y				+= io_apic_64.o mpparse.o genapic.o genapic_flat.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel_64.o crash_64.o