ASoC: samsung: i2s: Change indentation in SAMSUNG_I2S_FMTS definition

Change indentation so this macro definition spans 2 rows and looks
more consistent with surrounding code.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>