constify JNINativeMethod function pointer tables

Change-Id: I4036c924958221cbc644724f8eb01c5de3cd7954
diff --git a/core/jni/android_view_HardwareLayer.cpp b/core/jni/android_view_HardwareLayer.cpp
index cefb3da..93916fc 100644
--- a/core/jni/android_view_HardwareLayer.cpp
+++ b/core/jni/android_view_HardwareLayer.cpp
@@ -95,7 +95,7 @@
 
 const char* const kClassPathName = "android/view/HardwareLayer";
 
-static JNINativeMethod gMethods[] = {
+static const JNINativeMethod gMethods[] = {
 #ifdef USE_OPENGL_RENDERER
 
     { "nPrepare",                "(JIIZ)Z",    (void*) android_view_HardwareLayer_prepare },