sony-laptop: re-read the rfkill state when resuming from suspend

Without this, the hard-blocked state will be reported incorrectly if
the hardware switch is changed while the laptop is suspended.

Signed-off-by: Alan Jenkins <[e-mail]>
Tested-by: Norbert Preining <[e-mail]>
Acked-by: Mattia Dongili <[e-mail]>
Signed-off-by: John W. Linville <[e-mail]>

drivers/platform/x86/sony-laptop.c

···
 			sony_backlight_update_status(sony_backlight_device) < 0)
 		printk(KERN_WARNING DRV_PFX "unable to restore brightness level\n");
 
+	/* re-read rfkill state */
+	sony_nc_rfkill_update();
+
 	return 0;
 }