Merge changes Ib0ad8fab,Ifc4010de,Ic70a19ac into odroids7d-5.15.y_yocto-kirkstone-bsp-202501

* changes:
  ODROID-C5: arm64/dts: improve display to support HDMI hotplug
  ODROID-C5: drm/hdmi: improve HDMI Hotplug.
  Revert "ODROID-C5: drm: remove 'DUMMY-1' connector"