o Force the ebase to be 0x80000000 (the base that we're booted with may
need to be respected in the future).
o Initialize the clock early so we can initialize the console early
o use panic where we can now use it.
o Tag some code for parsing the boot records as belonging in the cavium sdk.
o remove support for booting on ancient boards...
# we make it further in bootstrapping now: interrupts being enabled in the
# uarts are now taking us out, it seems, for reasons unknown.
3a7c404577