Add Qt5 integration for qt demo image
- Adds Qt5 demo images
image-ktn-qt
,image-ktn-qt-swu
andswupdate-img-qt
package - Adds Qt configuration for Kontron demo
- Enabled QPA features: linuxfb and eglfs
- Enabled EGLFS integration: eglfs_kms, eglfs_viv
- Increases GPU clock in tf-a from 264MHz to 528MHz