XMAC_REG_CTRL
REG_WR(bp, xmac_base + XMAC_REG_CTRL,
val = REG_RD(bp, xmac_base + XMAC_REG_CTRL);
REG_WR(bp, xmac_base + XMAC_REG_CTRL, val);
REG_WR(bp, xmac_base + XMAC_REG_CTRL, val);
vals->xmac_addr = base_addr + XMAC_REG_CTRL;