Camera: Don't limit the camera provider types

Camera provider types should not be limited to a particular set
of pre-defined values. All providers will be treated equally
by camera framework regardless of their specific type.

Bug: 73738052
Test: run vts --skip-all-system-status-check --skip-preconditions
--primary-abi-only --module VtsHalCameraProviderV2_4Target -l INFO
Change-Id: I379c015d9e2fc4f68a7ad3ae7cd92b9d230dea33