ibmhawk_set
ibmhawk_set(sc, IBMHAWK_T_AMBIENT, resp.ihr_t_ambient, valid, create);
ibmhawk_set(sc, IBMHAWK_T_CPU+i,
ibmhawk_set(sc, IBMHAWK_F_FAN+i,
ibmhawk_set(sc, IBMHAWK_V_VOLTAGE+i,
static void ibmhawk_set(struct ibmhawk_softc *, int, int, bool, bool);