[coreboot] [PATCH]Move CACHE_AS_RAM_ADDRESS_DEBUG to Kconfig, default to false

[Patrick Georgi]

Hi,

attached patch moves CACHE_AS_RAM_ADDRESS_DEBUG out of romstage.c into
Kconfig, renames it slightly, makes it visible only on relevant
northbridges, drops it entirely from via boards (as they seem to have
picked it up from AMD code without using it themselves), and make it
default to false for all boards.

Some romstages used to set this to "true" (ie. "print debug output"),
but I didn't follow up on it in Kconfig - if you need it to debug CAR,
enable it yourself.

Signed-off-by: Patrick Georgi

Patrick