kconfig: refactor listnewconfig code

We can reuse __print_symbol() helper to print symbols for listnewconfig.
Only the difference is the format for "n" symbols.

This prints "CONFIG_FOO=n" instead of "# CONFIG_FOO is not set".

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/kconfig/conf.c

@@ -646,18 +646,8 @@ static void check_conf(struct menu *menu)
 
 		switch (input_mode) {
 		case listnewconfig:
-			if (sym->name) {
-				const char *val = sym_get_string_value(sym);
-				char *escaped = NULL;
-
-				if (sym->type == S_STRING) {
-					escaped = sym_escape_string_value(val);
-					val = escaped;
-				}
-
-				printf("%s%s=%s\n", CONFIG_, sym->name, val);
-				free(escaped);
-			}
+			if (sym->name)
+				print_symbol_for_listconfig(sym);
 			break;
 		case helpnewconfig:
 			printf("-----\n");

scripts/kconfig/confdata.c

@@ -667,6 +667,11 @@ static void print_symbol_for_autoconf(FILE *fp, struct symbol *sym)
 	__print_symbol(fp, sym, OUTPUT_N_NONE, true);
 }
 
+void print_symbol_for_listconfig(struct symbol *sym)
+{
+	__print_symbol(stdout, sym, OUTPUT_N, true);
+}
+
 static void print_symbol_for_c(FILE *fp, struct symbol *sym)
 {
 	const char *val;

scripts/kconfig/lkc_proto.h

@@ -19,6 +19,7 @@ extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
 struct symbol * sym_lookup(const char *name, int flags);
 struct symbol * sym_find(const char *name);
 char *sym_escape_string_value(const char *in);
+void print_symbol_for_listconfig(struct symbol *sym);
 struct symbol ** sym_re_search(const char *pattern);
 const char * sym_type_name(enum symbol_type type);
 void sym_calc_value(struct symbol *sym);