uaccess: remove needless usb_id call from udev rules
hwdb: ID_PRODUCT_FROM_DATABASE --> ID_MODEL_FROM_DATABASE

With the conversion from pci-db + usb-db to hwdb, the property
got accitentially renamed.

Move the name back to the long established identifier *MODEL*
instead of *PRODUCT*.

  $ git grep -l ID_MODEL_FROM_DATABASE
  hwdb/20-pci-vendor-model.hwdb
  hwdb/20-usb-vendor-model.hwdb
  hwdb/ids-update.pl
  man/systemd.device.xml
  rules/78-sound-card.rules
  src/core/device.c
  src/cryptsetup/cryptsetup.c