x86_64: prepare shared lib/bitstr.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86_64/lib/Makefile b/arch/x86_64/lib/Makefile
index c22087f..30eede7 100644
--- a/arch/x86_64/lib/Makefile
+++ b/arch/x86_64/lib/Makefile
@@ -9,5 +9,5 @@
 
 lib-y := csum-partial.o csum-copy.o csum-wrappers.o delay.o \
 	usercopy.o getuser.o putuser.o  \
-	thunk_64.o clear_page.o copy_page_64.o bitstr.o bitops.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
diff --git a/arch/x86_64/lib/bitstr.c b/arch/x86_64/lib/bitstr_64.c
similarity index 100%
rename from arch/x86_64/lib/bitstr.c
rename to arch/x86_64/lib/bitstr_64.c