mfd: axp20x: Add USB power supply mfd cell to AXP803

The AXP803 has a VBUS power input. Its functionality is the same as the
one found in the AXP813. Now that the axp20x_usb_power driver supports
this variant, we can add an mfd cell for it to use it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/axp20x.c

@@ -747,6 +747,11 @@ static const struct mfd_cell axp803_cells[] = {
 		.of_compatible	= "x-powers,axp813-ac-power-supply",
 		.num_resources	= ARRAY_SIZE(axp20x_ac_power_supply_resources),
 		.resources	= axp20x_ac_power_supply_resources,
+	}, {
+		.name		= "axp20x-usb-power-supply",
+		.num_resources	= ARRAY_SIZE(axp803_usb_power_supply_resources),
+		.resources	= axp803_usb_power_supply_resources,
+		.of_compatible	= "x-powers,axp813-usb-power-supply",
 	},
 	{	.name		= "axp20x-regulator" },
 };