UPSTREAM: mb/google/poppy/variants/nami: Implement variant_memory_params

This change provides implementation of variant_memory_params for
nami. Since it uses DDR4 memory, DQ-DQS mapping table is not
required. Also, Rcomp resistor values are provided based on SDP v/s
DDP memory.

BUG=b:70188937

Change-Id: I8b0d0bd5e01a59ab7cb811fda75543acf4599247
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Commit-Id: 060e2eb4f0e1c0de2afebcd9531734081f655897
Original-Change-Id: Ic1d0cfdb7d8b02fa0be0a4c54b20057a4c2fc3ce
Original-Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Original-Reviewed-on: https://review.coreboot.org/22779
Original-Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/821543
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
2 files changed