sunxi: power: Add support for disabling axp209 regulators

Add support for disabling the regulators found on the axp209 pmic.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/include/axp209.h b/include/axp209.h
index 13aa66c..e1b22e3 100644
--- a/include/axp209.h
+++ b/include/axp209.h
@@ -7,6 +7,7 @@
 enum axp209_reg {
 	AXP209_POWER_STATUS = 0x00,
 	AXP209_CHIP_VERSION = 0x03,
+	AXP209_OUTPUT_CTRL = 0x12,
 	AXP209_DCDC2_VOLTAGE = 0x23,
 	AXP209_DCDC3_VOLTAGE = 0x27,
 	AXP209_LDO24_VOLTAGE = 0x28,
@@ -23,6 +24,13 @@
 #define AXP209_POWER_STATUS_ON_BY_DC	(1 << 0)
 #define AXP209_POWER_STATUS_VBUS_USABLE	(1 << 4)
 
+#define AXP209_OUTPUT_CTRL_EXTEN	(1 << 0)
+#define AXP209_OUTPUT_CTRL_DCDC3	(1 << 1)
+#define AXP209_OUTPUT_CTRL_LDO2		(1 << 2)
+#define AXP209_OUTPUT_CTRL_LDO4		(1 << 3)
+#define AXP209_OUTPUT_CTRL_DCDC2	(1 << 4)
+#define AXP209_OUTPUT_CTRL_LDO3		(1 << 6)
+
 #define AXP209_IRQ5_PEK_UP		(1 << 6)
 #define AXP209_IRQ5_PEK_DOWN		(1 << 5)