inputflinger: make parameter comment style consistent

The Google C++ style guide [0] suggests that parameter name comments
should be of the form `/*paramName=*/value`. This potentially allows
tooling to check that the parameter names are correct, too.

[0]: https://google.github.io/styleguide/cppguide.html#Function_Argument_Comments

Bug: none
Test: host-side inputflinger_tests
Change-Id: I89625844bcd19d27c43b4f14f1f207ade39a4718
diff --git a/services/inputflinger/InputProcessor.cpp b/services/inputflinger/InputProcessor.cpp
index 02d62bf..a98b383 100644
--- a/services/inputflinger/InputProcessor.cpp
+++ b/services/inputflinger/InputProcessor.cpp
@@ -402,7 +402,7 @@
             { // acquire lock
                 std::scoped_lock threadLock(mLock);
                 mHalDeathRecipient =
-                        std::make_unique<ScopedDeathRecipient>(onBinderDied, this /*cookie*/);
+                        std::make_unique<ScopedDeathRecipient>(onBinderDied, /*cookie=*/this);
                 mHalDeathRecipient->linkToDeath(service->asBinder().get());
                 setMotionClassifierLocked(MotionClassifier::create(std::move(service)));
             } // release lock