Changing DeviceInfo fields to be mandatory.

This change removes the optionality ("?") from all of the device info
fields, now that DeviceIDs are mandatory. It also changes att_id_state
to the broader "fused" category. It may not convey exactly the same
meaning, but it seems better to avoid proliferating a lot of fields that
all speak to some technical detail of the factory provisioning status of
the device.

Test: atest VtsHalRemotelyProvisionedComponentTargetTest
Change-Id: Iaf3de6a7a7a9b8af7d2e9673d7f1320858b95617