Claude review: gpu: nova-core: gsp: use available device reference

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

Patch Review

This patch replaces `pdev.as_ref()` with `dev` in the `boot` method, where `dev` is already defined as `let dev = pdev.as_ref()` at the top of the function. The one place where `pdev.as_ref().into()` was used is changed to `dev.into()`.

> -        dev: pdev.as_ref().into(),
> +        dev: dev.into(),

I notice a pre-existing issue in the format string that the patch carries forward:

> +        dev_dbg!(dev, "SEC2 MBOX0: {:#x}, MBOX1{:#x}\n", mbox0, mbox1);

There's a missing colon and space after `MBOX1` - it reads `MBOX1{:#x}` instead of `MBOX1: {:#x}`. This exists in the original code too, so it's not introduced by this patch, but it might be worth a drive-by fix since the line is already being modified.

Also, there's a trailing comma in the reformatted debug line:

> +        dev_dbg!(dev, "RISC-V active? {}\n", gsp_falcon.is_riscv_active(bar),);

The trailing comma before `)` is valid Rust syntax (trailing commas are allowed in macro invocations), so this is purely a style observation. It appears to be an artifact of reformatting the multi-line original into a single line.

No correctness issues found.

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