ASoC: davinci-mcasp: Add dependecy to SND_DAVINCI_SOC or SND_OMAP_SOC

Fixes build with SND_DAVINCI_SOC or SND_OMAP_SOC alone and adds build
dependecy to SND_DAVINCI_SOC or SND_OMAP_SOC.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2 files changed