Move cpu_info variable outside ifdef

Fix compile error on arm, mips etc due to undefined variable.

TBR=harryjin@google.com
BUG=none

Review URL: https://codereview.chromium.org/1403373008 .

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 1516
+Version: 1517
 License: BSD
 License File: LICENSE
 

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 1516
+#define LIBYUV_VERSION 1517
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/cpu_id.cc

@@ -197,8 +197,8 @@ static LIBYUV_BOOL TestEnv(const char*) {
 
 LIBYUV_API SAFEBUFFERS
 int InitCpuFlags(void) {
-#if !defined(__pnacl__) && !defined(__CLR_VER) && defined(CPU_X86)
   int cpu_info;
+#if !defined(__pnacl__) && !defined(__CLR_VER) && defined(CPU_X86)
   uint32 cpu_info0[4] = { 0, 0, 0, 0 };
   uint32 cpu_info1[4] = { 0, 0, 0, 0 };
   uint32 cpu_info7[4] = { 0, 0, 0, 0 };