cxl/test: Address missing MODULE_DESCRIPTION warnings for cxl_test

Add MODULE_DESCRIPTION() to address the following warnings:
WARNING: modpost: missing MODULE_DESCRIPTION() in test/cxl_test.o
WARNING: modpost: missing MODULE_DESCRIPTION() in test/cxl_mock.o
WARNING: modpost: missing MODULE_DESCRIPTION() in test/cxl_mock_mem.o

[dj: s/CXL test/cxl_test:/ per djbw's comment]

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://patch.msgid.link/20250429235953.4175408-1-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>

Author: davejiang

tools/testing/cxl/test/cxl.c

@@ -1527,5 +1527,6 @@ MODULE_PARM_DESC(interleave_arithmetic, "Modulo:0, XOR:1");
 module_init(cxl_test_init);
 module_exit(cxl_test_exit);
 MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("cxl_test: setup module");
 MODULE_IMPORT_NS("ACPI");
 MODULE_IMPORT_NS("CXL");

tools/testing/cxl/test/mem.c

@@ -1909,4 +1909,5 @@ static struct platform_driver cxl_mock_mem_driver = {
 
 module_platform_driver(cxl_mock_mem_driver);
 MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("cxl_test: mem device mock module");
 MODULE_IMPORT_NS("CXL");

tools/testing/cxl/test/mock.c

@@ -312,5 +312,6 @@ void __wrap_cxl_dport_init_ras_reporting(struct cxl_dport *dport, struct device
 EXPORT_SYMBOL_NS_GPL(__wrap_cxl_dport_init_ras_reporting, "CXL");
 
 MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("cxl_test: emulation module");
 MODULE_IMPORT_NS("ACPI");
 MODULE_IMPORT_NS("CXL");