D21919: Change joystick settings icon to game controller

[Noah Davis]

ndavis edited the test plan for this revision.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D21919

To: ndavis, #vdg
Cc: kde-frameworks-devel, LeGast00n, michaelh, ngraham, bruns