ASoC: samsung: Rename Arndale card driver

Rename arndale_rt5631.c to just arnddale.c as we support other CODECs
than RT5631.  While at it replace spaces in Kconfig with tabs.

Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Link: https://lore.kernel.org/r/20191002105652.24821-3-s.nawrocki@samsung.com


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