dm: sound: samsung: Rename i2stx_info to samsung_i2s_priv

This struct is only used by the Samsung I2C driver and should move into
that driver. For now, rename it so it is clear that is driver-private
info.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sound/samsung-i2s.c b/drivers/sound/samsung-i2s.c
index 8f5cd19..7f43881 100644
--- a/drivers/sound/samsung-i2s.c
+++ b/drivers/sound/samsung-i2s.c
@@ -255,8 +255,8 @@
 	return 0;
 }
 
-int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned int *data,
-				unsigned long data_size)
+int i2s_transfer_tx_data(struct samsung_i2s_priv *pi2s_tx, unsigned int *data,
+			 unsigned long data_size)
 {
 	int i;
 	int start;
@@ -293,7 +293,7 @@
 	return 0;
 }
 
-int i2s_tx_init(struct i2stx_info *pi2s_tx)
+int i2s_tx_init(struct samsung_i2s_priv *pi2s_tx)
 {
 	int ret;
 	struct i2s_reg *i2s_reg =