ASoC: Intel: byt_rvp_platform_data can be static

sound/soc/intel/sst/sst_acpi.c:124:26: sparse: symbol 'byt_rvp_platform_data' was not declared. Should it be static?
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/sst/sst_acpi.c

@@ -121,7 +121,7 @@ static const struct sst_res_info byt_rvp_res_info = {
 	.acpi_ipc_irq_index = 5,
 };
 
-struct sst_platform_info byt_rvp_platform_data = {
+static struct sst_platform_info byt_rvp_platform_data = {
 	.probe_data = &byt_fwparse_info,
 	.ipc_info = &byt_ipc_info,
 	.lib_info = &byt_lib_dnld_info,