x86_64: prepare shared kernel/head.S

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

arch/x86_64/Makefile

@@ -71,7 +71,7 @@ CFLAGS += $(cflags-y)
 CFLAGS_KERNEL += $(cflags-kernel-y)
 AFLAGS += -m64
 
-head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task_64.o
+head-y := arch/x86_64/kernel/head_64.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task_64.o
 
 libs-y 					+= arch/x86_64/lib/
 core-y					+= arch/x86_64/kernel/ \

arch/x86_64/kernel/Makefile

@@ -2,7 +2,7 @@
 # Makefile for the linux kernel.
 #
 
-extra-y 	:= head.o head64.o init_task_64.o vmlinux.lds
+extra-y 	:= head_64.o head64.o init_task_64.o vmlinux.lds
 EXTRA_AFLAGS	:= -traditional
 obj-y	:= process_64.o signal_64.o entry_64.o traps_64.o irq_64.o \
 		ptrace_64.o time_64.o ioport_64.o ldt_64.o setup_64.o i8259_64.o sys_x86_64.o \