mfd: axp20x: Add a cell for the ac power_supply part of the axp20x PMICs

As a counterpart to the usb power_supply cell, this commit adds an AC
power_supply cell to the axp20x driver.

Still missing are the RTC backup battery and the main battery charger
cells.

Signed-off-by: Michael Haas <haas@computerlinguist.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 1ce9232..e4e3297 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -130,6 +130,12 @@
 	DEFINE_RES_IRQ_NAMED(AXP152_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
 };
 
+static struct resource axp20x_ac_power_supply_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_PLUGIN, "ACIN_PLUGIN"),
+	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_REMOVAL, "ACIN_REMOVAL"),
+	DEFINE_RES_IRQ_NAMED(AXP20X_IRQ_ACIN_OVER_V, "ACIN_OVER_V"),
+};
+
 static struct resource axp20x_pek_resources[] = {
 	{
 		.name	= "PEK_DBR",
@@ -499,6 +505,11 @@
 	}, {
 		.name		= "axp20x-regulator",
 	}, {
+		.name		= "axp20x-ac-power-supply",
+		.of_compatible	= "x-powers,axp202-ac-power-supply",
+		.num_resources	= ARRAY_SIZE(axp20x_ac_power_supply_resources),
+		.resources	= axp20x_ac_power_supply_resources,
+	}, {
 		.name		= "axp20x-usb-power-supply",
 		.of_compatible	= "x-powers,axp202-usb-power-supply",
 		.num_resources	= ARRAY_SIZE(axp20x_usb_power_supply_resources),