constify JNINativeMethod function pointer tables

Change-Id: I4036c924958221cbc644724f8eb01c5de3cd7954
diff --git a/core/jni/android_opengl_GLES30.cpp b/core/jni/android_opengl_GLES30.cpp
index 1d92cd4..8eb5044 100644
--- a/core/jni/android_opengl_GLES30.cpp
+++ b/core/jni/android_opengl_GLES30.cpp
@@ -5167,7 +5167,7 @@
 
 static const char *classPathName = "android/opengl/GLES30";
 
-static JNINativeMethod methods[] = {
+static const JNINativeMethod methods[] = {
 {"_nativeClassInit", "()V", (void*)nativeClassInit },
 {"glReadBuffer", "(I)V", (void *) android_glReadBuffer__I },
 {"glDrawRangeElements", "(IIIIILjava/nio/Buffer;)V", (void *) android_glDrawRangeElements__IIIIILjava_nio_Buffer_2 },