hg: valhalla/valhalla: Fix flag definition conflict

[frederic.parain at oracle.com]

Changeset: 4d1e8489a000
Author:    fparain
Date:      2018-04-12 09:26 -0400
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/4d1e8489a000

Fix flag definition conflict

! src/hotspot/share/utilities/accessFlags.hpp