ASoC: amd: acp-da7219-max98357a: Constify regulator_ops

Neither core nor the driver modifes 'struct regulator_ops', so it can be
const for code safety.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20240414164703.239851-1-krzk@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp-da7219-max98357a.c

@@ -733,7 +733,7 @@ static struct regulator_config acp_da7219_cfg = {
 	.init_data = &acp_da7219_data,
 };
 
-static struct regulator_ops acp_da7219_ops = {
+static const struct regulator_ops acp_da7219_ops = {
 };
 
 static const struct regulator_desc acp_da7219_desc = {