Fix the build failure in studiow.

The b/21010898 changed the security_settings_sfps_enroll_find_sensor_message
in branch tm-qpr. But in the branch master
security_settings_sfps_enroll_find_sensor_message has been moved from res to
res-product. The merge cl ag/21024400 should update the message in the
new place instead of adding it back to res.

Test: manual
Change-Id: I9ccc08be15631bff5e70ad146ba3761689206658