Update libva headers to the latest release (1.2.1).

third_party/libva/va/egl/va_egl_impl.h

Index: third_party/libva/va/egl/va_egl_impl.h
diff --git a/third_party/libva/va/egl/va_egl_impl.h b/third_party/libva/va/egl/va_egl_impl.h
deleted file mode 100644
index 8b6fb91b9fe112aca7b95f9a07da426b1a4cd97b..0000000000000000000000000000000000000000
--- a/third_party/libva/va/egl/va_egl_impl.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2012 Intel Corporation. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-#ifndef _VA_EGL_IMPL_H_
-#define _VA_EGL_IMPL_H_
-
-#define IMPL_MAX_EGL_SURFACE_TARGETS    4
-#define IMPL_MAX_EGL_SURFACE_ATTRIBUTES 8
-
-
-/**
- * Initialize EGL driver context
- *
- * @param[in]  dpy        the VA Display
- * @return VA_STATUS_SUCCESS if successful
- */
-VAStatus va_egl_init_context(VADisplay dpy);
-
-#endif /* _VA_GLX_IMPL_H_ */