Revert "Revert "Allow proxies to be compared.""

This reverts commit 7c238ef97977204a5a5ff65a39f602ceb44ed307.

(originally reverted due to merge conflicts)

Bug: 32172906
Test: hidl_test

Change-Id: I590c60ed529847742dede590e1e9a152a7650da0
5 files changed