util/spd_tools: Implement a unified version of the spd_gen tool

Currently there are two versions of spd_tools: one for LP4x and one for
DDR4. This change is the first step in unifying these into a single
tool.

This change implements a unified version of the spd_gen tool, by
combining the functionality currently in lp4x/gen_spd.go and
ddr4/gen_spd.go. The unified version takes the memory technology as an
argument, and generates SPD files for all platforms supporting that
technology.

BUG=b:191776301
TEST=Compare the SPDs generated by the old and new versions of the tool
for all supported platforms. For reference, the test script used is
here: https://review.coreboot.org/c/coreboot/+/57511

Signed-off-by: Reka Norman <rekanorman@google.com>
Change-Id: I7fc036996dbafbb54e075da0c3ac2ea0886a6db2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57512
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>

0 files changed, 0 insertions, 0 deletions