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/include/i2s.h b/include/i2s.h
index e6d45ec..800473a 100644
--- a/include/i2s.h
+++ b/include/i2s.h
@@ -76,7 +76,7 @@
 };
 
 /* This structure stores the i2s related information */
-struct i2stx_info {
+struct samsung_i2s_priv {
 	unsigned int rfs;		/* LR clock frame size */
 	unsigned int bfs;		/* Bit slock frame size */
 	unsigned int audio_pll_clk;	/* Audio pll frequency in Hz */
@@ -96,8 +96,8 @@
  *
  * @return		int value 0 for success, -1 in case of error
  */
-int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned *data,
-				unsigned long data_size);
+int i2s_transfer_tx_data(struct samsung_i2s_priv *pi2s_tx, uint *data,
+			 unsigned long data_size);
 
 /*
  * Initialise i2s transmiter
@@ -106,6 +106,6 @@
  *
  * @return		int value 0 for success, -1 in case of error
  */
-int i2s_tx_init(struct i2stx_info *pi2s_tx);
+int i2s_tx_init(struct samsung_i2s_priv *pi2s_tx);
 
 #endif /* __I2S_H__ */