mc13xxx_add_subdevice
mc13xxx_add_subdevice(mc13xxx, "%s-regulator");
mc13xxx_add_subdevice(mc13xxx, "%s-led");
mc13xxx_add_subdevice(mc13xxx, "%s-pwrbutton");
mc13xxx_add_subdevice(mc13xxx, "%s-codec");
mc13xxx_add_subdevice(mc13xxx, "%s-ts");
mc13xxx_add_subdevice(mc13xxx, "%s-adc");
mc13xxx_add_subdevice(mc13xxx, "%s-rtc");