Claude review: drm/amd/display: fix kernel-doc warnings

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Status: Clean / Reviewed-by worthy**

**Change 1 — Add `@power_module` doc (line 333 in the patched file):**

```c
 * @freesync_module: Module handling freesync calculations
 * @power_module: Manages replay, PSR, and backlight control functionality
 * @hdcp_workqueue: AMDGPU content protection queue
```

Verified: The struct member `struct mod_power *power_module;` exists at line 579 of the patched file, and the new doc comment is placed in the correct position matching the declaration order (after `freesync_module`, before `hdcp_workqueue`). The description is accurate — `mod_power` handles PSR, replay, and backlight. Correct.

**Change 2 — Rename `@dm_boot_time_crc_info` to `@boot_time_crc_info` (line 712 in the patched file):**

```c
	/**
	 * @boot_time_crc_info:
	 *
	 * Buffer info for the boot time crc.
	 */
	struct dm_boot_time_crc_info boot_time_crc_info;
```

Verified: The struct member is `boot_time_crc_info` (line 716), not `dm_boot_time_crc_info`. The old doc tag `@dm_boot_time_crc_info` was a copy-paste error from the type name `struct dm_boot_time_crc_info`. The fix correctly makes the kernel-doc tag match the member name. Correct.

**No issues. No nits.** The commit message clearly explains the problem (with the actual warning text), the `Fixes:` tags are appropriate, and the Cc list covers the relevant maintainers.

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