ASoC: wm2000: Expose some additional registers

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm2000.c b/sound/soc/codecs/wm2000.c
index 85550dc..627c454 100644
--- a/sound/soc/codecs/wm2000.c
+++ b/sound/soc/codecs/wm2000.c
@@ -717,6 +717,9 @@
 {
 	switch (reg) {
 	case WM2000_REG_SYS_START:
+	case WM2000_REG_ANC_GAIN_CTRL:
+	case WM2000_REG_MSE_TH1:
+	case WM2000_REG_MSE_TH2:
 	case WM2000_REG_SPEECH_CLARITY:
 	case WM2000_REG_SYS_WATCHDOG:
 	case WM2000_REG_ANA_VMID_PD_TIME: