dell-laptop: Wait less long before updating rfkill after an rfkill keypress

Some time is needed for the BIOS to do its work, but 250ms should be plenty.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>

drivers/platform/x86/dell-laptop.c

@@ -759,7 +759,7 @@ static bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
 		switch (data) {
 		case 0x8:
 			schedule_delayed_work(&dell_rfkill_work,
-					      round_jiffies_relative(HZ));
+					      round_jiffies_relative(HZ / 4));
 			break;
 		}
 		extended = false;