mb/google/volteer: Migrate volteer to use SPD files under spd/

SPD files are being moved from the soc and mainboard directories to a
centralised spd/ directory. This change migrates all volteer variants to
use this new location. The contents of the new SPDs are identical, only
their file paths have changed.

The variant Makefile.inc and dram_id.generated.txt files were generated
using the part_id_gen tool. E.g. for voema:

util/spd_tools/bin/part_id_gen \
  TGL \
  lp4x \
  src/mainboard/google/volteer/variants/voema/memory \
  src/mainboard/google/volteer/variants/voema/memory/mem_parts_used.txt

BUG=b:191776301
TEST=Check that each variant's coreboot.rom is the same with and without
this change. Built using:
abuild -p none -t google/volteer -a -x --timeless

Change-Id: Ibd4f42fd421bfa58354b532fe7a67ee59dac5e1d
Signed-off-by: Reka Norman <rekanorman@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57695
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

0 files changed, 0 insertions, 0 deletions