meson: Add versioning for xvmc tracker

The xvmc tracker used to be versionned with autotool but this seems to have been
lost in the meson switch.

Fixes: 22a817af8a ("meson: build gallium xvmc state tracker")
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Signed-off-by: Emmanuel Vadot <manu@FreeBSD.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5708>

src/gallium/frontends/xvmc/meson.build

@@ -18,6 +18,9 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+XVMC_MAJOR = 1
+XVMC_MINOR = 0
+
 libxvmc_st = static_library(
   'xvmc_st',
   files('attributes.c', 'block.c', 'context.c', 'surface.c', 'subpicture.c'),

src/gallium/targets/xvmc/meson.build

@@ -50,11 +50,12 @@ libxvmc_gallium = shared_library(
   install : true,
   install_dir : xvmc_drivers_path,
   name_suffix : 'so',
+  version : '@0@.@1@.0'.format(XVMC_MAJOR, XVMC_MINOR),
 )
 
 foreach d : [[with_gallium_r600, 'r600'], [with_gallium_nouveau, 'nouveau']]
   if d[0]
-    xvmc_drivers += 'libXvMC@0@.so'.format(d[1])
+    xvmc_drivers += 'libXvMC@0@.so.@1@.@2@.0'.format(d[1], XVMC_MAJOR, XVMC_MINOR)
   endif
 endforeach