samus: Move board version to a separate file

This combines the board version reading and parsing to
a separate file that is compiled in both romstage (for
early serial output) and ramstage (for smbios tables).

It also adds a new board version that is wrapped back
to number zero as we are running out of available IDs.

BUG=chrome-os-partner:32895
BRANCH=samus
TEST=build and boot on samus EVT1 and EVT2 and check
for proper board versions reported in console and smbios.

Change-Id: I8c8f17708ced7167277a98529ff4597589f53095
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Original-Commit-Id: 3ab8bba1021a8dd41dd2210ba73efd2231eb596c
Original-Change-Id: I2aa03e7486a9581f94dc4e12f6f29eb0c5b3bdbb
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/229041
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9473
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
6 files changed