rusticl/device: add retain/release callbacks for luxmark v4

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15439>

src/gallium/frontends/rusticl/api/icd.rs

@@ -116,8 +116,8 @@ pub static DISPATCH: cl_icd_dispatch = cl_icd_dispatch {
     clReleaseDeviceEXT: None,
     clCreateEventFromGLsyncKHR: None,
     clCreateSubDevices: None,
-    clRetainDevice: None,
-    clReleaseDevice: None,
+    clRetainDevice: Some(cl_retain_device),
+    clReleaseDevice: Some(cl_release_device),
     clCreateImage: Some(cl_create_image),
     clCreateProgramWithBuiltInKernels: None,
     clCompileProgram: Some(cl_compile_program),
@@ -562,6 +562,14 @@ extern "C" fn cl_create_buffer(
     match_obj!(create_buffer(context, flags, size, host_ptr,), errcode_ret)
 }
 
+extern "C" fn cl_retain_device(_device: cl_device_id) -> cl_int {
+    CL_SUCCESS as cl_int
+}
+
+extern "C" fn cl_release_device(_device: cl_device_id) -> cl_int {
+    CL_SUCCESS as cl_int
+}
+
 extern "C" fn cl_create_image_2d(
     context: cl_context,
     flags: cl_mem_flags,