amd/stoneyridge: Dump MCA registers
Add a function to provide a rudimentary dump of the Machine Check
Architecture registers. These values survive a warm reset.
BUG=b:
65445599
TEST=Verify on a Grunt having propensity for #MC errors
Change-Id: Ib6875cabe3041e65c811d8b2232f7ac6bedd1a02
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/27926
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>