media: pt1: use #ifdef CONFIG_PM_SLEEP instead of #if

As pointed by ktest:

>> drivers/media//pci/pt1/pt1.c:1433:5: warning: "CONFIG_PM_SLEEP" is not defined, evaluates to 0 [-Wundef]
    #if CONFIG_PM_SLEEP
        ^~~~~~~~~~~~~~~

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/pci/pt1/pt1.c

@@ -1443,7 +1443,7 @@ static struct pci_driver pt1_driver = {
 	.probe		= pt1_probe,
 	.remove		= pt1_remove,
 	.id_table	= pt1_id_table,
-#if CONFIG_PM_SLEEP
+#ifdef CONFIG_PM_SLEEP
 	.driver.pm	= &pt1_pm_ops,
 #endif
 };