ASoC: hdmi-codec: Add SNDRV_PCM_FMTBIT_32_LE playback format

The new playback format is needed for tda998x HDMI audio support. At
the moment the only other user of this codec is omap-hdmi-audio. This
change should not break anything because omap-hdmi-audio-dai, the
cpu-dai of omap-hdmi-audio, enforces sufficient constraints to
available sample formats.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/codecs/hdmi.c b/sound/soc/codecs/hdmi.c
index 68342b1..32797a8 100644
--- a/sound/soc/codecs/hdmi.c
+++ b/sound/soc/codecs/hdmi.c
@@ -44,7 +44,7 @@
 			SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
 			SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
 		.formats = SNDRV_PCM_FMTBIT_S16_LE |
-			SNDRV_PCM_FMTBIT_S24_LE,
+			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE,
 	},
 	.capture = {
 		.stream_name = "Capture",