Input: keyboard - fix potential out of bound access to key_map

Reported-by: Michal Roszkowski <michal@roszkowski.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/char/keyboard.c

@@ -1249,7 +1249,7 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw)
 		return;
 	}
 
-	if (keycode > NR_KEYS)
+	if (keycode >= NR_KEYS)
 		if (keycode >= KEY_BRL_DOT1 && keycode <= KEY_BRL_DOT8)
 			keysym = K(KT_BRL, keycode - KEY_BRL_DOT1 + 1);
 		else