Fix fingerprint crypto operations.

This fixes a bug introduced in the HIDL port where fingerprint no
longer notifies keystore of authentications.

Test: keyguard, FingerprintDialog

Fixes bug 34200870

Change-Id: I8b1aef9469ff4f4218573a6cde4c3a151512c226

public/hal_fingerprint.te

@@ -18,4 +18,7 @@ allow hal_fingerprint permission_service:service_manager find;
 # For memory allocation
 allow hal_fingerprint ion_device:chr_file r_file_perms;
 
+# Allow fingerprint to find and call keystore binder interfaces
+binder_use(hal_fingerprint);
+
 r_dir_file(hal_fingerprint, cgroup)

public/system_server.te

@@ -155,6 +155,7 @@ binder_call(system_server, { appdomain ephemeral_app })
 binder_call(system_server, binderservicedomain)
 binder_call(system_server, dumpstate)
 binder_call(system_server, fingerprintd)
+binder_call(system_server, hal_fingerprint)
 binder_call(system_server, gatekeeperd)
 binder_call(system_server, installd)
 binder_call(system_server, netd)