util/cbmem: Rebase to handle negative timestamps

Rebase all of the timestamps to the lowest (potentially negative) value
in the list when displaying them. Also drop the extra
`timestamp_print_*_entry` calls for time 0 and instead inserted a
"dummy" timestamp entry of time 0 into the table.

TEST=Boot to OS after adding negative timestamps, cbmem -t

Signed-off-by: Bora Guvendik <bora.guvendik@intel.com>
Change-Id: I7eb519c360e066d48dde205401e4ccd3b0b3d8a5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59555
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>

0 files changed, 0 insertions, 0 deletions