SurfaceControl: Crash due to invalid JNI cast

The (void*)buffer.get on ARM32 is 4 byte, so the calling convention
will put the argument in [sp, #12]. However, the caller actually
expects a long (the signature of gGraphicBufferClassInfo.builder),
which means it will expect it to be in [sp, #16]

Test: Tested on mtk device
Fixes: 36631082
Change-Id: I0f723125e612d096c0d76ca3360d895f3f23f286