Allow dm threads for GalaxyS*

This appears to have been added for the GalaxyS4 in
https://codereview.chromium.org/1106173004/, but we no longer test the
GalaxyS4.

BUG=skia:3214
NOTRY=true

Change-Id: I10c4e1457ebf0e65133ac914cd9fdf0964c74003
Reviewed-on: https://skia-review.googlesource.com/9090
Reviewed-by: Eric Boren <borenet@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
2 files changed