[coreboot] v3 bug report: Error base address register of UART in vt1211

Hi Carl,
I find a bug need to fix in superior/via/vt1211/Stage1.c 
    rawpnp_set_iobase(dev, 2, (iobase >> 2) & 0xff); 
    should be
    	rawpnp_set_iobase(dev, 0x60, ((iobase >> 2) & 0xff)<<8);
    according the spec of VT1211.
It seems that vt1211 only define the Rx60 for LOW address of UART
base,and Rx61 is not used at all.
However
-jasonzhao