mb/google/myst: Update DXIO descriptor definition

Update definition to be more intuitive and extensible.
Port descriptors will be defined as individual entities and added
to the descriptor list as such.

BUG=b:281059446
TEST=builds

Change-Id: I23ddd11b7e4da35a0d81299aa648f928e81ea24e
Signed-off-by: Jon Murphy <jpmurphy@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79626
Reviewed-by: Eric Lai <ericllai@google.com>
Reviewed-by: Tim Van Patten <timvp@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions