Claude review: fbdev: cobalt_lcdfb: Request memory region

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

Patch Review

**Status: Good**

Replaces separate `platform_get_resource()` + `devm_ioremap()` with a single `devm_platform_get_and_ioremap_resource()` call. The conversion is correct:

```c
info->screen_base = devm_platform_get_and_ioremap_resource(dev, 0, &res);
if (IS_ERR(info->screen_base)) {
    framebuffer_release(info);
    return PTR_ERR(info->screen_base);
}
```

The `res` output parameter is correctly used on the following line (`info->screen_size = resource_size(res)`), and the reordering (screen_base assigned before screen_size) is fine since `screen_size` is not needed for the mapping itself.

The original code returned `-EBUSY` when the resource wasn't found, which was arguably the wrong error code. The new code will return the actual error from the helper (likely `-EINVAL`), which is a minor improvement.

No issues.

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