mfd: arizona: Add MICVDD to mapped regulators for wm8997

The previous update adding MICVDD to the regulator mappings:

mfd: arizona: Add MICVDD to mapped regulators

Only added the mapping for wm5102 and wm5110 but wm8997 also has a
MICVDD supply that needs to be mapped back to the main Arizona device.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/arizona-core.c

@@ -613,6 +613,7 @@ static const struct mfd_cell wm5110_devs[] = {
 };
 
 static const char *wm8997_supplies[] = {
+	"MICVDD",
 	"DBVDD2",
 	"CPVDD",
 	"SPKVDD",