[PATCH] ALSA: core: sysfs: show components string

[Mark Brown]

On Mon, Mar 23, 2020 at 02:36:23PM -0500, Pierre-Louis Bossart wrote:
> Add attribute and show the components string. This is useful to see
> what is provided to userspace and e.g. used by UCM to understand the
> card configuration:
> 
> root at plb:~# more /sys/class/sound/card0/components
> HDA:8086280b,80860101,00100000 cfg-spk:2 hs:rt711 spk:rt1308 mic:rt715

Sysfs is supposed to be one value per file so this should be a directory
with a file for each component I guess.
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