ASoC: Intel: dw_pdata can be static

sound/soc/intel/sst-firmware.c:172:29: sparse: symbol 'dw_pdata' was not declared. Should it be static?
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/sst-firmware.c

@@ -169,7 +169,7 @@ static int block_list_prepare(struct sst_dsp *dsp,
 	return ret;
 }
 
-struct dw_dma_platform_data dw_pdata = {
+static struct dw_dma_platform_data dw_pdata = {
 	.is_private = 1,
 	.chan_allocation_order = CHAN_ALLOCATION_ASCENDING,
 	.chan_priority = CHAN_PRIORITY_ASCENDING,