ASoC: wm_hubs: Add trace showing semantics of the DCS update

Aids diagnostics.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c
index b340552..b2e939a 100644
--- a/sound/soc/codecs/wm_hubs.c
+++ b/sound/soc/codecs/wm_hubs.c
@@ -298,11 +298,15 @@
 
 		/* HPOUT1R */
 		offset = (s8)reg_r;
+		dev_dbg(codec->dev, "DCS right %d->%d\n", offset,
+			offset + hubs->dcs_codes_r);
 		offset += hubs->dcs_codes_r;
 		dcs_cfg = (u8)offset << WM8993_DCS_DAC_WR_VAL_1_SHIFT;
 
 		/* HPOUT1L */
 		offset = (s8)reg_l;
+		dev_dbg(codec->dev, "DCS left %d->%d\n", offset,
+			offset + hubs->dcs_codes_l);
 		offset += hubs->dcs_codes_l;
 		dcs_cfg |= (u8)offset;