x86_64: prepare shared kernel/genapic_flat.c

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

arch/x86_64/kernel/Makefile

@@ -22,7 +22,7 @@ obj-$(CONFIG_MICROCODE)		+= microcode.o
 obj-$(CONFIG_X86_CPUID)		+= cpuid.o
 obj-$(CONFIG_SMP)		+= smp_64.o smpboot_64.o trampoline_64.o tsc_sync.o
 obj-y				+= apic_64.o  nmi_64.o
-obj-y				+= io_apic_64.o mpparse_64.o genapic_64.o genapic_flat.o
+obj-y				+= io_apic_64.o mpparse_64.o genapic_64.o genapic_flat_64.o
 obj-$(CONFIG_KEXEC)		+= machine_kexec.o relocate_kernel_64.o crash_64.o
 obj-$(CONFIG_CRASH_DUMP)	+= crash_dump_64.o
 obj-$(CONFIG_PM)		+= suspend_64.o