firmware: meson_sm: refactor serial sysfs entry via dev_groups attrs
Introduce just another way to register sysfs serial entry: the less code, the better in the absence of extra error-paths Signed-off-by:Evgeny Bachinin <EABachinin@salutedevices.com> Acked-by:
Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20231108125604.162383-2-EABachinin@salutedevices.com Signed-off-by:
Neil Armstrong <neil.armstrong@linaro.org>
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