mkclock_isa_nvwr
mkclock_isa_nvwr(sc, MK48T18_CLKOFF + MK48TXX_ICSR, csr);
mkclock_isa_nvwr(sc, MK48T18_CLKOFF + MK48TXX_ICSR, ocsr);
mkclock_isa_nvwr(sc, MK48T18_CLKOFF + MK48TXX_ICSR, csr);
mkclock_isa_nvwr(sc, MK48T18_CLKOFF + MK48TXX_ICSR, ocsr);
sc->sc_nvwr = mkclock_isa_nvwr;
void mkclock_isa_nvwr(struct mk48txx_softc *, int, uint8_t);