drm/xe/tests: Set correct expectation

In xe_migrate_sanity_kunit test, use correct expected value as
the expected value was not only used for the xe_migrate_clear(),
but also for the xe_migrate_copy() operation.

v2: Add 'Fixes' tag and update commit text

Fixes: 11a2407e ("drm/xe: Stop accepting value in xe_migrate_clear")
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

drivers/gpu/drm/xe/tests/xe_migrate.c

@@ -147,6 +147,7 @@ static void test_copy(struct xe_migrate *m, struct xe_bo *bo,
 	xe_map_memset(xe, &sysmem->vmap, 0, 0xc0, sysmem->size);
 	xe_map_memset(xe, &bo->vmap, 0, 0xd0, bo->size);
 
+	expected = 0xc0c0c0c0c0c0c0c0;
 	fence = xe_migrate_copy(m, sysmem, sysmem->ttm.resource,
 				bo->ttm.resource);
 	if (!sanity_fence_failed(xe, fence, big ? "Copying big bo sysmem -> vram" :