power: regulator: add AXP323 support

The X-Powers AXP323 is very close sibling to the AXP313A, only that it
adds support for dual-phasing the first two DC/DC converters.

We do not really care about this particular feature, so just add the new
compatible string and tie it to the existing AXP313A support code.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>

drivers/power/pmic/axp.c

@@ -89,6 +89,7 @@ static const struct udevice_id axp_pmic_ids[] = {
 	{ .compatible = "x-powers,axp221", .data = AXP221_ID },
 	{ .compatible = "x-powers,axp223", .data = AXP223_ID },
 	{ .compatible = "x-powers,axp313a", .data = AXP313_ID },
+	{ .compatible = "x-powers,axp323", .data = AXP323_ID },
 	{ .compatible = "x-powers,axp717", .data = AXP717_ID },
 	{ .compatible = "x-powers,axp803", .data = AXP803_ID },
 	{ .compatible = "x-powers,axp806", .data = AXP806_ID },

drivers/power/regulator/axp_regulator.c

@@ -318,6 +318,7 @@ static const struct axp_regulator_plat *const axp_regulators[] = {
 	[AXP221_ID]	= axp22x_regulators,
 	[AXP223_ID]	= axp22x_regulators,
 	[AXP313_ID]	= axp313_regulators,
+	[AXP323_ID]	= axp313_regulators,
 	[AXP717_ID]	= axp717_regulators,
 	[AXP803_ID]	= axp803_regulators,
 	[AXP806_ID]	= axp806_regulators,

include/axp_pmic.h

@@ -33,6 +33,7 @@ enum {
 	AXP221_ID,
 	AXP223_ID,
 	AXP313_ID,
+	AXP323_ID,
 	AXP717_ID,
 	AXP803_ID,
 	AXP806_ID,