mfd: mt6397-core: Add support for AUXADCs on MT6357/58/59 PMICs

Add the relevant AUXADC driver entries to the MFD cells of the
MT6357, MT6358, MT6359 PMICs to support their Auxiliary ADCs.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240530093410.112716-4-angelogioacchino.delregno@collabora.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/mfd/mt6397-core.c

@@ -135,6 +135,9 @@ static const struct mfd_cell mt6323_devs[] = {
 
 static const struct mfd_cell mt6357_devs[] = {
 	{
+		.name = "mt6359-auxadc",
+		.of_compatible = "mediatek,mt6357-auxadc"
+	}, {
 		.name = "mt6357-regulator",
 	}, {
 		.name = "mt6357-rtc",
@@ -175,6 +178,9 @@ static const struct mfd_cell mt6331_mt6332_devs[] = {
 
 static const struct mfd_cell mt6358_devs[] = {
 	{
+		.name = "mt6359-auxadc",
+		.of_compatible = "mediatek,mt6358-auxadc"
+	}, {
 		.name = "mt6358-regulator",
 		.of_compatible = "mediatek,mt6358-regulator"
 	}, {
@@ -194,6 +200,10 @@ static const struct mfd_cell mt6358_devs[] = {
 };
 
 static const struct mfd_cell mt6359_devs[] = {
+	{
+		.name = "mt6359-auxadc",
+		.of_compatible = "mediatek,mt6359-auxadc"
+	},
 	{ .name = "mt6359-regulator", },
 	{
 		.name = "mt6359-rtc",