ASoC: soc-core: makes snd_soc_set_dmi_name() local

soc-core.c only calls snd_soc_set_dmi_name(), so we don't need to have
EXPORT_SYMBOL_GPL() for it. Let's makes it local function.

No one uses *flavour parameter, let's remove it.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87v7tfyk7b.wl-kuninori.morimoto.gx@renesas.com


Signed-off-by: Mark Brown <broonie@kernel.org>