google/eve: Limit memory SKU 5 to 1600MHz

Due to issues with stability limit the SKU with K4EBE304EB-EGCF
memory to 1600MHz instead of 1866MHz.

BUG=b:37172778
BRANCH=none
TEST=pass stress testing on devices with this memory

Change-Id: I02af7e9c35e2c5b0b85223d58025cbd29841d973
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/19227
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
3 files changed