add SMT battery holder for cr1216/cr1220/cr1225
Created by: descampsa
From Linx datasheet https://linxtechnologies.com/wp/wp-content/uploads/bat-hld-012-smt.pdf
Created by: descampsa
From Linx datasheet https://linxtechnologies.com/wp/wp-content/uploads/bat-hld-012-smt.pdf