type-c-service/tests: Convert std/ucsi example into integration test

[RobertZ2011]

No description provided.

[Copilot]

Pull request overview

This PR migrates the previous examples/std UCSI workflow into a type-c-service integration test, so UCSI behavior is exercised under cargo test rather than via a standalone example binary.

Changes:

• Added a new Tokio-based integration test (type-c-service/tests/ucsi.rs) that drives PPM/LPM commands and validates emitted UCSI CCI events.
• Removed the old std example binary (examples/std/src/bin/type_c/ucsi.rs) and its [[bin]] entry.
• Enabled PartialEq/Eq on UCSI-related response/message types to support equality assertions in tests, and adjusted the crate’s log feature wiring.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
type-c-service/tests/ucsi.rs	New UCSI integration test covering PPM reset/notification enable and per-port connect/status/ack flows.
type-c-service/tests/common/mod.rs	Increased the shared integration-test timeout constant.
type-c-service/Cargo.toml	log feature now also enables power-policy-service/log (used by the integration test harness).
examples/std/src/bin/type_c/ucsi.rs	Removed the std UCSI example implementation (superseded by the integration test).
examples/std/Cargo.toml	Removed the type-c-ucsi bin target entry.
embedded-service/src/type_c/external.rs	Added PartialEq/Eq to UcsiResponse for test assertions.
embedded-service/src/type_c/comms.rs	Added PartialEq/Eq to Type-C comms message types for test assertions.

[jerrysxie]

@RobertZ2011 Are we planning to forward port some of these tests into main at some point?

[RobertZ2011]

Are we planning to forward port some of these tests into main at some point?

Yeah, I currently have #826, #827, and #825 to cover this. Once the v1 PRs land, those will likely end up on @tullom to port them to main.