ASoC: arizona: Add support for directly setting the FLL REFCLK

This patch allows the REFCLK to be set directly allowing much greater
flexibility in how the FLLs are configured.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c
index cd17b47..2d9b55f 100644
--- a/sound/soc/codecs/wm5110.c
+++ b/sound/soc/codecs/wm5110.c
@@ -880,6 +880,12 @@
 		return arizona_set_fll(&wm5110->fll[0], source, Fref, Fout);
 	case WM5110_FLL2:
 		return arizona_set_fll(&wm5110->fll[1], source, Fref, Fout);
+	case WM5110_FLL1_REFCLK:
+		return arizona_set_fll_refclk(&wm5110->fll[0], source, Fref,
+					      Fout);
+	case WM5110_FLL2_REFCLK:
+		return arizona_set_fll_refclk(&wm5110->fll[1], source, Fref,
+					      Fout);
 	default:
 		return -EINVAL;
 	}