[settings] Export find_setting()

Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/core/settings.c

  * @v name		Name
  * @ret setting		Named setting, or NULL
  */
-static struct setting * find_setting ( const char *name ) {
+struct setting * find_setting ( const char *name ) {
 	struct setting *setting;
 
 	for_each_table_entry ( setting, SETTINGS ) {

src/include/ipxe/settings.h

 extern int setting_cmp ( struct setting *a, struct setting *b );
 
 extern struct settings * find_settings ( const char *name );
+extern struct setting * find_setting ( const char *name );
 
 extern int storef_setting ( struct settings *settings,
 			    struct setting *setting,