Drallion will use soldered down memory. Add dummy spd file.
BUG=b:139397313
BRANCH=N/A
TEST=Build and check cbfs has the dummy spd.bin
Change-Id: Ife59c2dd689d72b117f30e832a3ce7eed4fa4220
Signed-off-by: Eric Lai <ericr_lai@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35113
Reviewed-by: Mathew King <mathewk@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>