x86_64: prepare shared lib/usercopy.c

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

arch/x86_64/lib/Makefile

@@ -8,6 +8,6 @@ obj-y := io.o iomap_copy_64.o
 obj-$(CONFIG_SMP)	+= msr-on-cpu.o
 
 lib-y := csum-partial.o csum-copy_64.o csum-wrappers_64.o delay.o \
-	usercopy.o getuser_64.o putuser.o  \
+	usercopy_64.o getuser_64.o putuser.o  \
 	thunk_64.o clear_page_64.o copy_page_64.o bitstr_64.o bitops.o
 lib-y += memcpy_64.o memmove_64.o memset.o copy_user.o rwlock_64.o copy_user_nocache_64.o