cpu-o3: Reformat O3 source files

[happy-lx]

Motivation

Separate formatting-only O3 changes that were mixed into #1008, so PHAST behavior can be reviewed independently.

Scope

• Reformat commit.cc, dyn_inst.hh, iew.cc, and mem_dep_unit.cc.
• No PHAST or MDP behavior, configuration, statistics, or other functional changes are included.

Validation

• git diff --check passes.
• Each changed file has the same lexical token sequence as xs-dev; only whitespace, line wrapping, indentation, and comment spacing differ.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 78cf0d94-24dd-4ba9-a6f8-94700d04ae06

📥 Commits

Reviewing files that changed from the base of the PR and between 618ffb4 and f127297.

📒 Files selected for processing (4)

• src/cpu/o3/commit.cc
• src/cpu/o3/dyn_inst.hh
• src/cpu/o3/iew.cc
• src/cpu/o3/mem_dep_unit.cc

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[github-actions]

🚀 Coremark Smoke Test Results

Branch	IPC	Change
Base (xs-dev)	2.2475	-
This PR	2.2475	➡️ 0.0000 (0.00%)

✅ Difftest smoke test passed!

[jueshiwenli]

非常好的feature使我醍醐灌顶