mfd: wm5110: Add registers for custom write sequence triggers

This register will be needed as part of some additional support for the
headphone path on wm5110, so this patch adds the register and sets up
its regmap config.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/mfd/wm5110-tables.c b/drivers/mfd/wm5110-tables.c
index 12cad94..62a4aa1 100644
--- a/drivers/mfd/wm5110-tables.c
+++ b/drivers/mfd/wm5110-tables.c
@@ -676,6 +676,7 @@
 	{ 0x00000032, 0x0100 },    /* R50    - PWM Drive 3 */
 	{ 0x00000040, 0x0000 },    /* R64    - Wake control */
 	{ 0x00000041, 0x0000 },    /* R65    - Sequence control */
+	{ 0x00000042, 0x0000 },    /* R66    - Spare Triggers */
 	{ 0x00000061, 0x01FF },    /* R97    - Sample Rate Sequence Select 1 */
 	{ 0x00000062, 0x01FF },    /* R98    - Sample Rate Sequence Select 2 */
 	{ 0x00000063, 0x01FF },    /* R99    - Sample Rate Sequence Select 3 */
@@ -1716,6 +1717,7 @@
 	case ARIZONA_PWM_DRIVE_3:
 	case ARIZONA_WAKE_CONTROL:
 	case ARIZONA_SEQUENCE_CONTROL:
+	case ARIZONA_SPARE_TRIGGERS:
 	case ARIZONA_SAMPLE_RATE_SEQUENCE_SELECT_1:
 	case ARIZONA_SAMPLE_RATE_SEQUENCE_SELECT_2:
 	case ARIZONA_SAMPLE_RATE_SEQUENCE_SELECT_3: