constify JNINativeMethod function pointer tables

Change-Id: I4036c924958221cbc644724f8eb01c5de3cd7954
diff --git a/core/jni/android_view_KeyCharacterMap.cpp b/core/jni/android_view_KeyCharacterMap.cpp
index 7653f58..e5519a7 100644
--- a/core/jni/android_view_KeyCharacterMap.cpp
+++ b/core/jni/android_view_KeyCharacterMap.cpp
@@ -203,7 +203,7 @@
  * JNI registration.
  */
 
-static JNINativeMethod g_methods[] = {
+static const JNINativeMethod g_methods[] = {
     /* name, signature, funcPtr */
     { "nativeReadFromParcel", "(Landroid/os/Parcel;)J",
             (void*)nativeReadFromParcel },