kconfig: require T_EOL to reduce visible statement

All line-oriented statements should be reduced when seeing a T_EOL
token. I guess missing T_EOL for the "visible" statement is just a
mistake. This commit decreases one shift/reduce conflict.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/scripts/kconfig/zconf.y b/scripts/kconfig/zconf.y
index 22fceb2..c28f1a8 100644
--- a/scripts/kconfig/zconf.y
+++ b/scripts/kconfig/zconf.y
@@ -31,7 +31,7 @@
 static struct menu *current_menu, *current_entry;
 
 %}
-%expect 30
+%expect 29
 
 %union
 {
@@ -461,7 +461,7 @@
 	| visibility_list T_EOL
 ;
 
-visible: T_VISIBLE if_expr
+visible: T_VISIBLE if_expr T_EOL
 {
 	menu_add_visibility($2);
 };