sh: ms7724: modify scan_timing for KEYSC

KEYSC::SCN register of SH7724 is 3bit.
Thus, scan_timing should be 0 - 7 here.
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/boards/mach-se/7724/setup.c

@@ -313,7 +313,7 @@ static struct platform_device fsi_device = {
 /* KEYSC in SoC (Needs SW33-2 set to ON) */
 static struct sh_keysc_info keysc_info = {
 	.mode = SH_KEYSC_MODE_1,
-	.scan_timing = 10,
+	.scan_timing = 3,
 	.delay = 50,
 	.keycodes = {
 		KEY_1, KEY_2, KEY_3, KEY_4, KEY_5,