dfu: Add support for more Poly usb devices
dfu: Add support for more Poly usb devices

Specify the Flags in dfu.qurik for Poly Studio R30, P5 and E70.

fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd