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: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

sound/soc/davinci/Kconfig

@@ -6,6 +6,7 @@ config SND_DAVINCI_SOC_I2S
 	tristate
 
 config SND_DAVINCI_SOC_MCASP
+	depends on SND_DAVINCI_SOC || SND_OMAP_SOC
 	tristate
 
 config SND_DAVINCI_SOC_VCIF

sound/soc/davinci/davinci-mcasp.c

@@ -1223,14 +1223,22 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 		goto err;
 
 	switch (mcasp->version) {
+#if IS_BUILTIN(CONFIG_SND_DAVINCI_SOC) || \
+	(IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \
+	 IS_MODULE(CONFIG_SND_DAVINCI_SOC))
 	case MCASP_VERSION_1:
 	case MCASP_VERSION_2:
 	case MCASP_VERSION_3:
 		ret = davinci_soc_platform_register(&pdev->dev);
 		break;
+#endif
+#if IS_BUILTIN(CONFIG_SND_OMAP_SOC) || \
+	(IS_MODULE(CONFIG_SND_DAVINCI_SOC_MCASP) && \
+	 IS_MODULE(CONFIG_SND_OMAP_SOC))
 	case MCASP_VERSION_4:
 		ret = omap_pcm_platform_register(&pdev->dev);
 		break;
+#endif
 	default:
 		dev_err(&pdev->dev, "Invalid McASP version: %d\n",
 			mcasp->version);