kconfig: change sym_choice_default() to take the choice menu

Change the argument of sym_choice_default() to ease further cleanups.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/kconfig/confdata.c

@@ -779,7 +779,7 @@ int conf_write_defconfig(const char *filename)
 		if (choice) {
 			struct symbol *ds;
 
-			ds = sym_choice_default(choice->sym);
+			ds = sym_choice_default(choice);
 			if (sym == ds && sym_get_tristate_value(sym) == yes)
 				continue;
 		}

scripts/kconfig/lkc.h

@@ -109,7 +109,7 @@ void menu_get_ext_help(struct menu *menu, struct gstr *help);
 
 /* symbol.c */
 void sym_clear_all_valid(void);
-struct symbol *sym_choice_default(struct symbol *sym);
+struct symbol *sym_choice_default(struct menu *choice);
 struct symbol *sym_calc_choice(struct menu *choice);
 struct property *sym_get_range_prop(struct symbol *sym);
 const char *sym_get_string_default(struct symbol *sym);

scripts/kconfig/symbol.c

@@ -255,14 +255,14 @@ static void sym_calc_visibility(struct symbol *sym)
  * Next locate the first visible choice value
  * Return NULL if none was found
  */
-struct symbol *sym_choice_default(struct symbol *sym)
+struct symbol *sym_choice_default(struct menu *choice)
 {
 	struct symbol *def_sym;
 	struct property *prop;
 	struct expr *e;
 
 	/* any of the defaults visible? */
-	for_all_defaults(sym, prop) {
+	for_all_defaults(choice->sym, prop) {
 		prop->visible.tri = expr_calc_value(prop->visible.expr);
 		if (prop->visible.tri == no)
 			continue;
@@ -272,7 +272,7 @@ struct symbol *sym_choice_default(struct symbol *sym)
 	}
 
 	/* just get the first visible value */
-	prop = sym_get_choice_prop(sym);
+	prop = sym_get_choice_prop(choice->sym);
 	expr_list_for_each_sym(prop->expr, e, def_sym)
 		if (def_sym->visible != no)
 			return def_sym;
@@ -312,7 +312,7 @@ struct symbol *sym_calc_choice(struct menu *choice)
 	 * explicitly set to 'n'.
 	 */
 	if (!res) {
-		res = sym_choice_default(choice->sym);
+		res = sym_choice_default(choice);
 		if (res && sym_has_value(res) && res->def[S_DEF_USER].tri == no)
 			res = NULL;
 	}