ASoC: arizona: Set FLL to free-run before disabling

The FLL must be placed into free-run mode before disabling
to allow it to entirely shut down.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org

sound/soc/codecs/arizona.c

@@ -1528,6 +1528,8 @@ static void arizona_enable_fll(struct arizona_fll *fll,
 	/* Clear any pending completions */
 	try_wait_for_completion(&fll->ok);
 
+	regmap_update_bits(arizona->regmap, fll->base + 1,
+			   ARIZONA_FLL1_FREERUN, 0);
 	regmap_update_bits(arizona->regmap, fll->base + 1,
 			   ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
 	if (use_sync)
@@ -1546,6 +1548,8 @@ static void arizona_disable_fll(struct arizona_fll *fll)
 	struct arizona *arizona = fll->arizona;
 	bool change;
 
+	regmap_update_bits(arizona->regmap, fll->base + 1,
+			   ARIZONA_FLL1_FREERUN, ARIZONA_FLL1_FREERUN);
 	regmap_update_bits_check(arizona->regmap, fll->base + 1,
 				 ARIZONA_FLL1_ENA, 0, &change);
 	regmap_update_bits(arizona->regmap, fll->base + 0x11,