i2c: st: reword according to newest specification

Change the wording of this driver wrt. the newest I2C v7 and SMBus 3.2
specifications and replace "master/slave" with more appropriate terms.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index 5e01fe3..05b19ed 100644
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2013 STMicroelectronics
  *
- * I2C master mode controller driver, used in STMicroelectronics devices.
+ * I2C controller driver, used in STMicroelectronics devices.
  *
  * Author: Maxime Coquelin <maxime.coquelin@st.com>
  */
@@ -150,7 +150,7 @@
 
 /**
  * struct st_i2c_client - client specific data
- * @addr: 8-bit slave addr, including r/w bit
+ * @addr: 8-bit target addr, including r/w bit
  * @count: number of bytes to be transfered
  * @xfered: number of bytes already transferred
  * @buf: data buffer
@@ -667,7 +667,7 @@
 		i2c |= SSC_I2C_ACKG;
 	st_i2c_set_bits(i2c_dev->base + SSC_I2C, i2c);
 
-	/* Write slave address */
+	/* Write target address */
 	st_i2c_write_tx_fifo(i2c_dev, c->addr);
 
 	/* Pre-fill Tx fifo with data in case of write */
@@ -766,7 +766,7 @@
 }
 
 static const struct i2c_algorithm st_i2c_algo = {
-	.master_xfer = st_i2c_xfer,
+	.xfer = st_i2c_xfer,
 	.functionality = st_i2c_func,
 };