OMAPDSS: HDMI: Decouple HDMI audio from ASoC

Instead of having OMAPDSS HDMI audio functionality depending on the
ASoC HDMI audio driver, use a new config option so that
potential users, including ASoC, may select if needed.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index 13b45af..1c939fb 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -573,8 +573,7 @@
 	.dump_core		=	ti_hdmi_4xxx_core_dump,
 	.dump_pll		=	ti_hdmi_4xxx_pll_dump,
 	.dump_phy		=	ti_hdmi_4xxx_phy_dump,
-#if defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI) || \
-	defined(CONFIG_SND_OMAP_SOC_OMAP4_HDMI_MODULE)
+#if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
 	.audio_enable		=       ti_hdmi_4xxx_wp_audio_enable,
 	.audio_disable		=       ti_hdmi_4xxx_wp_audio_disable,
 	.audio_start		=       ti_hdmi_4xxx_audio_start,