ALSA: Docs: Fix typo in tegra_hda doc.

The correct name of the third clock is hda2codec_2x.
Signed-off-by: NDylan Reid <dgreid@chromium.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

Documentation/devicetree/bindings/sound/nvidia,tegra30-hda.txt

@@ -20,9 +20,9 @@ hda@0,70030000 {
 	clocks = <&tegra_car TEGRA124_CLK_HDA>,
 		 <&tegra_car TEGRA124_CLK_HDA2HDMI>,
 		 <&tegra_car TEGRA124_CLK_HDA2CODEC_2X>;
-	clock-names = "hda", "hda2hdmi", "hdacodec_2x";
+	clock-names = "hda", "hda2hdmi", "hda2codec_2x";
 	resets = <&tegra_car 125>, /* hda */
 		 <&tegra_car 128>; /* hda2hdmi */
 		 <&tegra_car 111>, /* hda2codec_2x */
-	reset-names = "hda", "hda2hdmi", "hdacodec_2x";
+	reset-names = "hda", "hda2hdmi", "hda2codec_2x";
 };