ASoC: AC97: SMDK-WM9713: Convert notes from cset to sset

It's more robust when references are provided in control names
rather than numid.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>