ASoC: wm2000: Expose some additional registers

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

sound/soc/codecs/wm2000.c

@@ -717,6 +717,9 @@ static bool wm2000_readable_reg(struct device *dev, unsigned int reg)
 {
 	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:

sound/soc/codecs/wm2000.h

@@ -10,6 +10,9 @@
 #define _WM2000_H
 
 #define WM2000_REG_SYS_START	    0x8000
+#define WM2000_REG_ANC_GAIN_CTRL    0x8fa2
+#define WM2000_REG_MSE_TH2          0x8fdf
+#define WM2000_REG_MSE_TH1          0x8fe0
 #define WM2000_REG_SPEECH_CLARITY   0x8fef
 #define WM2000_REG_SYS_WATCHDOG     0x8ff6
 #define WM2000_REG_ANA_VMID_PD_TIME 0x8ff7