ASoC: intel: Constify ACPI device ids

Constify the ACPI device ID array, it doesn't need to be writable at
runtime.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/common/sst-acpi.c

@@ -263,7 +263,7 @@ static struct sst_acpi_desc sst_acpi_baytrail_desc = {
 	.resindex_dma_base = -1,
 };
 
-static struct acpi_device_id sst_acpi_match[] = {
+static const struct acpi_device_id sst_acpi_match[] = {
 	{ "INT33C8", (unsigned long)&sst_acpi_haswell_desc },
 	{ "INT3438", (unsigned long)&sst_acpi_broadwell_desc },
 	{ "80860F28", (unsigned long)&sst_acpi_baytrail_desc },