AUX_CTRL
reg = rt2800_register_read(rt2x00dev, AUX_CTRL);
rt2800_register_write(rt2x00dev, AUX_CTRL, reg);
reg = rt2x00mmio_register_read(rt2x00dev, AUX_CTRL);
rt2x00mmio_register_write(rt2x00dev, AUX_CTRL, reg);