baytrail: add C0 and D0 stepping decode

The E3800 with ordering code FH8065301487717 is stepping D0, value 0x11.
Add that so the debug log shows 'D0' instead of '??'.

Also, add the C0 stepping decode to fsp_baytrail.

Change-Id: Ibec764fcf5d3f448e38831786a071f5ab6066d67
Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Reviewed-on: http://review.coreboot.org/12488
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
4 files changed