ASoC: hdmi-codec: fix spelling mistake "plalform" -> "platform"

There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/hdmi-codec.c

@@ -757,7 +757,7 @@ static int hdmi_codec_probe(struct platform_device *pdev)
 	dev_dbg(dev, "%s()\n", __func__);
 
 	if (!hcd) {
-		dev_err(dev, "%s: No plalform data\n", __func__);
+		dev_err(dev, "%s: No platform data\n", __func__);
 		return -EINVAL;
 	}