Standardize watchdog messages

Try to stick to a common layout for watchdog messages:

- Skip leading "In " prefix.
- Identify "<type>::<method>".
- Ensure that all watchpoints around KeyMint invocations mention either
  "IKeyMintDevice" or "IKeyMintOperation" (to make it clearer when
  Keystore is blocked on the underlying KeyMint implementation).

Bug: 265778655
Test: watch logcat, add deliberate sleeps
Change-Id: I803a0a7a60b445848afea00b5f48cf7fd1f17fe5
diff --git a/keystore2/src/operation.rs b/keystore2/src/operation.rs
index 7d988e1..27f8ef6 100644
--- a/keystore2/src/operation.rs
+++ b/keystore2/src/operation.rs
@@ -286,7 +286,7 @@
         }
         *locked_outcome = Outcome::Pruned;
 
-        let _wp = wd::watch("In Operation::prune: calling abort()");
+        let _wp = wd::watch("Operation::prune: calling IKeyMintOperation::abort()");
 
         // We abort the operation. If there was an error we log it but ignore it.
         if let Err(e) = map_km_error(self.km_op.abort()) {
@@ -362,7 +362,7 @@
             .context(ks_err!("Trying to get auth tokens."))?;
 
         self.update_outcome(&mut outcome, {
-            let _wp = wd::watch("Operation::update_aad: calling updateAad");
+            let _wp = wd::watch("Operation::update_aad: calling IKeyMintOperation::updateAad");
             map_km_error(self.km_op.updateAad(aad_input, hat.as_ref(), tst.as_ref()))
         })
         .context(ks_err!("Update failed."))?;
@@ -386,7 +386,7 @@
 
         let output = self
             .update_outcome(&mut outcome, {
-                let _wp = wd::watch("Operation::update: calling update");
+                let _wp = wd::watch("Operation::update: calling IKeyMintOperation::update");
                 map_km_error(self.km_op.update(input, hat.as_ref(), tst.as_ref()))
             })
             .context(ks_err!("Update failed."))?;
@@ -416,7 +416,7 @@
 
         let output = self
             .update_outcome(&mut outcome, {
-                let _wp = wd::watch("Operation::finish: calling finish");
+                let _wp = wd::watch("Operation::finish: calling IKeyMintOperation::finish");
                 map_km_error(self.km_op.finish(
                     input,
                     signature,
@@ -447,7 +447,7 @@
         *locked_outcome = outcome;
 
         {
-            let _wp = wd::watch("Operation::abort: calling abort");
+            let _wp = wd::watch("Operation::abort: calling IKeyMintOperation::abort");
             map_km_error(self.km_op.abort()).context(ks_err!("KeyMint::abort failed."))
         }
     }