B2063_RX_BB_CTL2
b43_radio_mask(dev, B2063_RX_BB_CTL2, ~0x2);
{ .offset = B2063_RX_BB_CTL2, .value_a = 0x0004, .value_g = 0x0004, .flags = B206X_FLAG_A | B206X_FLAG_G, },