i2c_ctrl_unregister
ret = i2c_ctrl_unregister(sim->sim_hdls[i]);
i2c_ctrl_reg_error_t ret = i2c_ctrl_unregister(ismt->ismt_hdl);
i2c_ctrl_reg_error_t ret = i2c_ctrl_unregister(pch->ps_hdl);
extern i2c_ctrl_reg_error_t i2c_ctrl_unregister(i2c_ctrl_hdl_t *);