kconfig: make conf_get_autoconfig_name() static

This is only used in confdata.c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

scripts/kconfig/confdata.c

@@ -226,7 +226,7 @@ const char *conf_get_configname(void)
 	return name ? name : ".config";
 }
 
-const char *conf_get_autoconfig_name(void)
+static const char *conf_get_autoconfig_name(void)
 {
 	char *name = getenv("KCONFIG_AUTOCONFIG");
 

scripts/kconfig/lkc.h

@@ -49,7 +49,6 @@ const char *zconf_curname(void);
 
 /* confdata.c */
 const char *conf_get_configname(void);
-const char *conf_get_autoconfig_name(void);
 char *conf_get_default_confname(void);
 void sym_set_change_count(int count);
 void sym_add_change_count(int count);