frontends/va: get libva api version from va_version.h

Signed-off-by: Thong Thai <thong.thai@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: David Rosca <david.rosca@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38773>

src/gallium/frontends/va/meson.build

@@ -1,8 +1,6 @@
 # Copyright © 2017-2019 Intel Corporation
 # SPDX-License-Identifier: MIT
 
-libva_version = dep_va.version().split('.')
-
 libva_st = static_library(
   'va_st',
   files(

src/gallium/targets/va/meson.build

@@ -34,10 +34,9 @@ devenv.set('LIBVA_DRIVERS_PATH', meson.current_build_dir())
 if host_machine.system() == 'windows'
   link_with_libva_gallium += [libwsgdi]
 
-  libva_init_version = dep_va.version().split('.')
   vaon12_def_input = configure_file(
     configuration: {
-      '__vaDriverInit_X_Y': '__vaDriverInit_@0@_@1@'.format(libva_init_version[0], libva_init_version[1]) + '@4'
+      '__vaDriverInit_X_Y': '__vaDriverInit_@0@_@1@'.format(libva_version[0], libva_version[1]) + '@4'
     },
     input: 'vaon12.def.in',
     output: 'vaon12.def.in',