Add some missing nativeResourceForIntegration imlementations

The EglDisplay and the Display is normally a PlatformIntegration wide
resource

Change-Id: Ie5382a2a0b34fbe1c506b5134bf581afbd7f5d99
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
QColorDialog: Add missing accelerator key

Change-Id: Ibafe9f1bf36a8c19fb7f3f66e425db2e7d9f84ca
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>