clover: empty soversion when on win32

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7675
Cc: mesa-stable

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Prodea Alexandru-Liviu <liviuprodea@yahoo.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19653>
(cherry picked from commit 14eef14147)

.pick_status.json

@@ -328,7 +328,7 @@
         "description": "clover: empty soversion when on win32",
         "nominated": true,
         "nomination_type": 0,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null
     },

src/gallium/targets/opencl/meson.build

@@ -100,6 +100,7 @@ libopencl = shared_library(
     dep_clock, dep_dl, dep_unwind, dep_elf, dep_clang, dep_version
   ],
   version : '@0@.0.0'.format(opencl_version),
+  soversion : host_machine.system() == 'windows' ? '' : opencl_version,
   install : true,
 )