arch/x86/acpi_bert_storage.c: Use a common implementation

All targets now use cbmem for the BERT region, so the implementation can
be common.

This also drops the obsolete comment about the need to have bert in a
reserved region (cbmem gets fixed to be in a reserved region).

Change-Id: I6f33d9e05a02492a1c91fb7af94aadaa9acd2931
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64602
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

0 files changed, 0 insertions, 0 deletions