platform/x86/intel/pmt/discovery: fix format string warning

When -Wformat-security is enabled, this new code triggers it:

drivers/platform/x86/intel/pmt/discovery.c: In function 'pmt_features_discovery':
drivers/platform/x86/intel/pmt/discovery.c:505:36: error: format not a string literal and no format arguments [-Werror=format-security]
  505 |                                    pmt_feature_names[feature->id]);

Fixes: d9a0788 ("platform/x86/intel/pmt: Add PMT Discovery driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20250711072718.2748415-1-arnd@kernel.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: arndb

drivers/platform/x86/intel/pmt/discovery.c

@@ -502,7 +502,7 @@ static int pmt_features_discovery(struct pmt_features_priv *priv,
 	}
 
 	ret = kobject_init_and_add(&feature->kobj, ktype, &priv->dev->kobj,
-				   pmt_feature_names[feature->id]);
+				   "%s", pmt_feature_names[feature->id]);
 	if (ret)
 		return ret;