Convert all comments into "doxygen-ready" comments.

Bug: 36453077
Test: mma
Change-Id: I0b1f77dfae5d2258969e33d85ecf45401ffbdfaa
diff --git a/gatekeeper/1.0/IGatekeeper.hal b/gatekeeper/1.0/IGatekeeper.hal
index c193477..59dd7d1 100644
--- a/gatekeeper/1.0/IGatekeeper.hal
+++ b/gatekeeper/1.0/IGatekeeper.hal
@@ -91,7 +91,7 @@
        vec<uint8_t> providedPassword)
     generates (GatekeeperResponse response);
 
-/*
+/**
  * Deletes the enrolledPasswordHandle associated with the uid. Once deleted
  * the user cannot be verified anymore.
  * This is an optional method.
@@ -107,7 +107,7 @@
  */
 deleteUser(uint32_t uid) generates (GatekeeperResponse response);
 
-/*
+/**
  * Deletes all the enrolled_password_handles for all uid's. Once called,
  * no users must be enrolled on the device.
  * This is an optional method.