[LTP] checkpatch: Pass git root

[linuxtestproject.agent@gmail.com]

Hi Petr,

On Wed, 13 May 2026, Petr Vorel wrote:
> checkpatch: Pass git root

> -CHECK_NOFLAGS			?= CHECKPATCH_CONFIG_DIR="$(abs_top_srcdir)" $(abs_top_srcdir)/scripts/checkpatch.pl -f
> +CHECK_NOFLAGS			?= CHECKPATCH_CONFIG_DIR="$(abs_top_srcdir)" $(abs_top_srcdir)/scripts/checkpatch.pl -f  --root $(abs_top_srcdir)

Note: there is a double space between `-f` and `--root`; consider collapsing
to a single space for consistency.

Reviewed-by: LTP AI Reviewer <ltp-ai@noreply.github.com>

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