Specify -mfpu=neon for neon files

libvpx_srcs_arm_neon_cpu_detect_intrinsics.gypi

+# This file is generated. Do not edit.
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'targets': [
+    {
+      'target_name': 'libvpx_intrinsics_neon',
+      'type': 'static_library',
+      'include_dirs': [
+        'source/config/<(OS_CATEGORY)/<(target_arch)',
+        '<(libvpx_source)',
+      ],
+      'sources': [
+        '<(libvpx_source)/vp8/common/arm/neon/bilinearpredict_neon.c',
+        '<(libvpx_source)/vp8/common/arm/neon/idct_blk_neon.c',
+        '<(libvpx_source)/vp8/encoder/arm/neon/denoising_neon.c',
+        '<(libvpx_source)/vp9/common/arm/neon/vp9_convolve_neon.c',
+        '<(libvpx_source)/vp9/common/arm/neon/vp9_idct16x16_neon.c',
+        '<(libvpx_source)/vp9/common/arm/neon/vp9_loopfilter_16_neon.c',
+      ],
+      'conditions': [
+        ['os_posix==1 and OS!="mac"', {
+          'cflags!': [ '-mfpu=vfpv3-d16' ],
+          'cflags': [ '-mfpu=neon', ],
+        }],
+        ['OS=="mac"', {
+          'xcode_settings': {
+            'OTHER_CFLAGS': [ '-mfpu=neon', ],
+          },
+        }],
+      ],
+    },
+  ],
+}