This adds support for Zilia SDVB8D8A34XGCL3N3T LP4x chips. Generatd SPD data with: util/spd_tools/bin/spd_gen spd/lp4x/memory_parts.json lp4x BRANCH=None BUG=344482259 Change-Id: I4408e62ab2a15002960c1d9659ab6af45bd7f7bb Signed-off-by: Leo Chou <leo.chou@lcfc.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/82782 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Reviewed-by: Eric Lai <ericllai@google.com> Reviewed-by: Subrata Banik <subratabanik@google.com>