[coreboot] dell s1850: 00e8 is important!

[Myles Watson]

> here is post rest
> postreset:SerialICE-hlp: outl 00e8 <= 44656c6c
Dell
> postreset:SerialICE-hlp: outl 00e8 <= 50726f74
Prot
> postreset:SerialICE-hlp: outl 00e8 <= 496e6974 <=== this one kills serialice
Init

Thanks,
Myles