[staging-next V3] staging/easycap: fix build when SND is not enabled

[Winkler, Tomas]

> Acked-by: Randy Dunlap <randy.dunlap at oracle.com>
> 
> The Kconfig file needs some care with using tabs instead of spaces
> and possibly with alignment of some of the keywords.
>
I've passed it through checkpatch.pl but I'll check again.
Do you want me to respin the patch or can be done on top of it?

Thanks
Tomas
 

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