ASoC: Only enable thermal shutdown when required on WM9081

The WM9081 thermal shutdown is only effective when the speaker output is
enabled so disable it when that is not in use for a small current saving.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm9081.c

@@ -737,6 +737,7 @@ SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
 		    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
 SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
+SND_SOC_DAPM_SUPPLY("TSENSE", WM9081_POWER_MANAGEMENT, 7, 0, NULL, 0),
 };
 
 
@@ -759,6 +760,7 @@ static const struct snd_soc_dapm_route wm9081_audio_paths[] = {
 	{ "Speaker PGA", NULL, "CLK_SYS" },
 
 	{ "Speaker", NULL, "Speaker PGA" },
+	{ "Speaker", NULL, "TSENSE" },
 
 	{ "SPKN", NULL, "Speaker" },
 	{ "SPKP", NULL, "Speaker" },