ASoC: cs35l56: Attempt to read from cirrus,speaker-id device property first

When cs35l56 is connected via cs42l43 there isn't an ACPI node for the
cs35l56 so all properties are under the cs42l43 ACPI node. We're adding
a property as a way for the cs42l43 driver to pass this info in via a
software node.
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240611132556.1557075-3-ckeepax@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs35l56-shared.c

@@ -853,9 +853,16 @@ EXPORT_SYMBOL_NS_GPL(cs35l56_hw_init, SND_SOC_CS35L56_SHARED);
 int cs35l56_get_speaker_id(struct cs35l56_base *cs35l56_base)
 {
 	struct gpio_descs *descs;
-	int speaker_id;
+	u32 speaker_id;
 	int i, ret;
 
+	/* Attempt to read the speaker type from a device property first */
+	ret = device_property_read_u32(cs35l56_base->dev, "cirrus,speaker-id", &speaker_id);
+	if (!ret) {
+		dev_dbg(cs35l56_base->dev, "Speaker ID = %d\n", speaker_id);
+		return speaker_id;
+	}
+
 	/* Read the speaker type qualifier from the motherboard GPIOs */
 	descs = gpiod_get_array_optional(cs35l56_base->dev, "spk-id", GPIOD_IN);
 	if (!descs) {