soc/amd/common/vboot: Drop reporting of Silicon level

Per the PSP team, this field in the transfer buffer isn't used anymore
and always set to zero, causing devices to incorrectly report having
pre-production silicon.

Change-Id: Ida4bf4b9328ac83d905e4c3f822e6ceabe9be79d
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77630
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>

0 files changed, 0 insertions, 0 deletions