sf: Exclude VDS use of HWC on non-UM platforms

Author: Bruno Martins <bgcngm@gmail.com>
Date:   Wed Oct 14 23:45:14 2020 +0100
Edit:   Adapt to new lineage soong config

Change-Id: Ic0f314f4053628667a921951f610839f36a5079c
Signed-off-by: N0m4n904 <noah.anleitner@halogenos.org>