sony-laptop.c: fix off-by-one

This patch fixes an off-by-one spotted by the Coverity checker.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Acked-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NLen Brown <len.brown@intel.com>

drivers/misc/sony-laptop.c

@@ -315,7 +315,7 @@ static void sony_laptop_report_input_event(u8 event)
 		break;
 
 	default:
-		if (event > ARRAY_SIZE(sony_laptop_input_index)) {
+		if (event >= ARRAY_SIZE(sony_laptop_input_index)) {
 			dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
 			break;
 		}