Claude review: drm/exynos: fbdev: Inline exynos_drm_fbdev_update()

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

Patch Review

**Status: Good**

`exynos_drm_fbdev_update()` was a single-caller function that always returned 0. Inlining it removes the `err_destroy_framebuffer` error label, which was dead code since the function could never fail.

The inlined assignments are all non-failable:
```c
+	info->fbops = &exynos_drm_fb_ops;
+	drm_fb_helper_fill_info(info, helper, sizes);
+	info->flags |= FBINFO_VIRTFB;
+	info->screen_buffer = exynos_gem->kvaddr;
+	info->screen_size = size;
+	info->fix.smem_len = size;
```

Removing the dead `err_destroy_framebuffer` path is correct — if something failed here (it can't), the fbdev teardown via `fb_destroy` would clean up the framebuffer anyway.

No concerns.

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