zephyr: lazor: Enable the ps8xxx override function
zephyr: lazor: Enable the ps8xxx override function

This function is needed to detect the correct product ID for each port.
Add it.

BUG=b:183296099, b:183118990
BRANCH=none
TEST=Build lazor on zephyr; no obvious changes when run

Signed-off-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>
Change-Id: I1c7637a6fa6ccd1f0b82cbbd62575c43f096b641
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2822391
Reviewed-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec