x86_64: prepare shared lib/csum-copy.S

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

arch/x86_64/lib/Makefile

@@ -7,7 +7,7 @@ CFLAGS_csum-partial.o := -funroll-loops
 obj-y := io.o iomap_copy_64.o
 obj-$(CONFIG_SMP)	+= msr-on-cpu.o
 
-lib-y := csum-partial.o csum-copy.o csum-wrappers.o delay.o \
+lib-y := csum-partial.o csum-copy_64.o csum-wrappers.o delay.o \
 	usercopy.o getuser.o putuser.o  \
 	thunk_64.o clear_page.o copy_page_64.o bitstr_64.o bitops.o
 lib-y += memcpy.o memmove.o memset.o copy_user.o rwlock.o copy_user_nocache.o