[Android] build: add vulkan

[Thomas Guillem]

vlc-android | branch: 4.0-vulkan | Thomas Guillem <thomas at gllm.fr> | Fri Nov  2 17:11:26 2018 +0100| [6dbff0a4e9e9abc4aa7c5dfe0a28d42cc1cda430] | committer: Thomas Guillem

build: add vulkan

> https://code.videolan.org/videolan/vlc-android/commit/6dbff0a4e9e9abc4aa7c5dfe0a28d42cc1cda430
---

 compile-libvlc.sh                          |    4 +
 libvlc/jni/Android.mk                      |    6 +
 libvlc/jni/vulkan-dummy.c                  | 1949 ++++++++++++++++++++++++++++
 libvlc/src/org/videolan/libvlc/LibVLC.java |   23 +
 4 files changed, 1982 insertions(+)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/6dbff0a4e9e9abc4aa7c5dfe0a28d42cc1cda430