tools/testing/cxl: Mock dvsec_ranges()

For test purposes, pretend that that CXL DVSEC ranges are not in active
use and the device is ready CXL.mem operation.

Link: https://lore.kernel.org/r/164298431119.3018233.17175518196764977542.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

tools/testing/cxl/test/mem.c

@@ -248,6 +248,14 @@ static void label_area_release(void *lsa)
 	vfree(lsa);
 }
 
+static void mock_validate_dvsec_ranges(struct cxl_dev_state *cxlds)
+{
+	struct cxl_endpoint_dvsec_info *info;
+
+	info = &cxlds->info;
+	info->mem_enabled = true;
+}
+
 static int cxl_mock_mem_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -285,6 +293,8 @@ static int cxl_mock_mem_probe(struct platform_device *pdev)
 	if (rc)
 		return rc;
 
+	mock_validate_dvsec_ranges(cxlds);
+
 	cxlmd = devm_cxl_add_memdev(cxlds);
 	if (IS_ERR(cxlmd))
 		return PTR_ERR(cxlmd);