Blackfin arch: use generic xor.h

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

diff --git a/arch/blackfin/include/asm/xor.h b/arch/blackfin/include/asm/xor.h
new file mode 100644
index 0000000..c82eb12
--- /dev/null
+++ b/arch/blackfin/include/asm/xor.h
@@ -0,0 +1 @@
+#include <asm-generic/xor.h>