registerReferences registers absolute subclass

There was a problem where when a passthrough
service was loaded, it only registered the class that
was requested instead of the actual class to
hwservicemanager (and therefore lshal for debugDumps).

Change-Id: I127653f99b3813bac5ad0e832a165cfc469ee17f
Fixes: 74407622
Test: lshal
1 file changed