Test rts54hub rtd21xx (#2927)
Test rts54hub rtd21xx (#2927)

* rts54hub: Optimized rtd21xx ISP flow
hughsie/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd,fwupd/fwupd