platform/x86: toshiba_acpi: change turn_on_panel_on_resume to static

turn_on_panel_on_resume is only used in toshiba_acpi.c now, change it
to static.

Fixes: 3cb1f40d ("drivers/platform: toshiba_acpi: Call HCI_PANEL_POWER_ON on resume on some models")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220920084434.3739493-1-yangyingliang@huawei.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/toshiba_acpi.c

@@ -52,7 +52,7 @@ MODULE_AUTHOR("John Belmonte");
 MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
 MODULE_LICENSE("GPL");
 
-int turn_on_panel_on_resume = -1;
+static int turn_on_panel_on_resume = -1;
 module_param(turn_on_panel_on_resume, int, 0644);
 MODULE_PARM_DESC(turn_on_panel_on_resume,
 	"Call HCI_PANEL_POWER_ON on resume (-1 = auto, 0 = no, 1 = yes");