Claude review: drm/panel: boe-bf060y8m-aj0: use devm_drm_panel_add()

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

Patch Review

**Status: Good**

The change replaces:
```c
drm_panel_add(&boe->panel);
```
with:
```c
ret = devm_drm_panel_add(dev, &boe->panel);
if (ret)
    return ret;
```
and removes `drm_panel_remove(&boe->panel)` from the `remove` callback.

This is correct. The `remove` callback is retained because this driver uses manual `mipi_dsi_attach()` (not `devm_mipi_dsi_attach()`), so it still needs its `mipi_dsi_detach()` call in `boe_bf060y8m_aj0_remove()`. The devres-managed panel removal will happen automatically after `remove()` returns.

**One minor observation**: The `boe_bf060y8m_aj0_remove()` callback now only does `mipi_dsi_detach()` with error reporting. This is fine as-is, but a potential follow-up could convert to `devm_mipi_dsi_attach()` and eliminate the `remove` callback entirely — though that's out of scope for this fix.

The error handling for `devm_drm_panel_add()` failure (returning the error code) is correct. No other cleanup is needed since all prior resource acquisitions in the probe function already use devres (`devm_gpiod_get`, `devm_drm_panel_alloc`, etc.).

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