[PATCH v2] arm: s3c: use string choices helper

[Kuninori Morimoto]

Hi Krzysztof

Thank you for your review

> > We can use string choices helper, let's use it.
> > 
> > Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
> > ---
> > v1 -> v2
> > 	- add commit message
> Did you read the feedback? Not much improved.

Ah, I have been mis-understood. Will post v3

Thank you for your help !!

Best regards
---
Kuninori Morimoto