Restrictions introduced in vendor init mean that new devices
may not no longer exempt vendor init from writing to system_data_file.
This means we must introduce a new label for /data/vendor which
vendor_init may write to.

Bug: 73087047
Test: build and boot Taimen and Marlin. Complete SUW, enroll fingerprint
    No new denials.

Change-Id: I65f904bb28952d4776aab947515947e14befbe34