clang format / lint cleanup for arm scale functions

TBR=kjellander@chromium.org
BUG=libyuv:725
TEST=lint

Change-Id: I76f777427f9b1458faba12796fb0011d8e3228d5
Reviewed-on: https://chromium-review.googlesource.com/646586Reviewed-by: Cheng Wang <wangcheng@google.com>

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1666
+Version: 1667
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1666
+#define LIBYUV_VERSION 1667
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_