smi_rmw
static int smi_rmw(device_t dev, uint16_t addr, uint16_t mask, uint16_t data, int sleep);
smi_rmw(dev, RTL8366_RCR,
smi_rmw(dev, RTL8366_RCR,
smi_rmw(dev, RTL8366_SGCR,
smi_rmw(dev, RTL8366_VMCR(RTL8366_VMCR_MU_REG, 0),
smi_rmw(dev, RTL8366_VMCR(RTL8366_VMCR_MU_REG, 1),
smi_rmw(dev, RTL8366_PVCR_REG(0),
err = smi_rmw(dev, RTL8366_PVCR_REG(port),