mfd: arizona: Mark DSP clocking register as volatile

The DSPs will often control there own clock speeds whilst running as
such we should mark the registers controlling this as volatile.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/wm5102-tables.c b/drivers/mfd/wm5102-tables.c
index 187ee86..a856ac7 100644
--- a/drivers/mfd/wm5102-tables.c
+++ b/drivers/mfd/wm5102-tables.c
@@ -1925,6 +1925,7 @@
 	case ARIZONA_AOD_IRQ1:
 	case ARIZONA_AOD_IRQ2:
 	case ARIZONA_AOD_IRQ_RAW_STATUS:
+	case ARIZONA_DSP1_CLOCKING_1:
 	case ARIZONA_DSP1_STATUS_1:
 	case ARIZONA_DSP1_STATUS_2:
 	case ARIZONA_DSP1_STATUS_3: