ASoC: ac97: Provide stub DAPM integration

Ensure continued operation with DAPM being mandatory.
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/ac97.c

@@ -23,6 +23,16 @@
 #include <sound/initval.h>
 #include <sound/soc.h>
 
+static const struct snd_soc_dapm_widget ac97_widgets[] = {
+	SND_SOC_DAPM_INPUT("RX"),
+	SND_SOC_DAPM_OUTPUT("TX"),
+};
+
+static const struct snd_soc_dapm_route ac97_routes[] = {
+	{ "AC97 Capture", NULL, "RX" },
+	{ "TX", NULL, "AC97 Playback" },
+};
+
 static int ac97_prepare(struct snd_pcm_substream *substream,
 			struct snd_soc_dai *dai)
 {
@@ -117,6 +127,11 @@ static struct snd_soc_codec_driver soc_codec_dev_ac97 = {
 	.probe = 	ac97_soc_probe,
 	.suspend =	ac97_soc_suspend,
 	.resume =	ac97_soc_resume,
+
+	.dapm_widgets = ac97_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(ac97_widgets),
+	.dapm_routes = ac97_routes,
+	.num_dapm_routes = ARRAY_SIZE(ac97_routes),
 };
 
 static int ac97_probe(struct platform_device *pdev)