zlib: keep Android CPU feature wrapper

Signed-off-by: luoqianlin <qianlinluo@foxmail.com>

Author: luoqianlin

deps/zlib/android-cpu-features.c

@@ -0,0 +1,2 @@
+// Build the Android NDK CPU feature implementation as part of zlib.
+#include <cpu-features.c>

deps/zlib/zlib.gyp

@@ -203,7 +203,7 @@
             }],
             ['OS=="android"', {
               'sources': [
-                '<(android_ndk_path)/sources/android/cpufeatures/cpu-features.c',
+                '<(ZLIB_ROOT)/android-cpu-features.c',
               ],
             }],
             # Incorporate optimizations where possible.