D17269: Fix build failure in neon by adding QVariant include.

[Nathaniel Graham]

ngraham added reviewers: apol, mart.

REPOSITORY
  R244 KCoreAddons

REVISION DETAIL
  https://phabricator.kde.org/D17269

To: scarlettclark, apol, mart
Cc: kde-frameworks-devel, michaelh, ngraham, bruns