The newer batch of these boards do not de-assert VW PLTRST# on S3
resume, causes the units to not power on in the EC code. Switch them to
S0ix by default, but leave S3 available.
Change-Id: I95337c1391102db9e020e82bdd938659c1a4f905
Signed-off-by: Tim Crawford <tcrawford@system76.com>