[coreboot] continuing some v2 doco

[Peter Stuge]

ron minnich wrote:
> +This new section uses some constructs not yet discussed in detail. XIP\_ROM\_SIZE just refers to the 
> +fact that the failover code is eXecute In Place, i.e. not copied to ROM.

"not copied to RAM"


> Of course, the ROM part of normal/fallback is as well, so the usage of XIP here is somewhat confusinh.

"confusing"


> +\subsubsection{how it is built}

"How" ?


//Peter