crosvm: enable the "gpu" feature by default on Windows.
crosvm: enable the "gpu" feature by default on Windows.

BUG=b:213149288
TEST=presubmit

Change-Id: I726324893d78b8cc0303d1bb4d8132e48889a5bc
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3960861
Reviewed-by: Daniel Verkamp <72bc170b46ec491f7bdd4359a1c0bfed274de40c@chromium.org>
Commit-Queue: Pujun Lun <44f73f20486fefa5f75e126d2918ae0dbc923dd5@google.com>

google/crosvm,google/crosvm,google/crosvm,google/crosvm