rsu_read_region_1
int rsu_read_region_1(struct rsu_softc *, uint16_t, uint8_t *,
if (rsu_read_region_1(sc, addr, &val, 1) != 0)
if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 2) != 0)
if (rsu_read_region_1(sc, addr, (uint8_t *)&val, 4) != 0)