i2c: stm32f4: 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>
Acked-by: Alain Volmat <alain.volmat@foss.st.com>
Acked-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

Author: Wolfram Sang

drivers/i2c/busses/i2c-stm32f4.c

@@ -95,7 +95,7 @@
 
 /**
  * struct stm32f4_i2c_msg - 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 transferred
  * @buf: data buffer
  * @result: result of the transfer
@@ -480,7 +480,7 @@ static void stm32f4_i2c_handle_rx_done(struct stm32f4_i2c_dev *i2c_dev)
 
 /**
  * stm32f4_i2c_handle_rx_addr() - Handle address matched interrupt in case of
- * master receiver
+ * controller receiver
  * @i2c_dev: Controller's private data
  */
 static void stm32f4_i2c_handle_rx_addr(struct stm32f4_i2c_dev *i2c_dev)
@@ -643,7 +643,7 @@ static irqreturn_t stm32f4_i2c_isr_error(int irq, void *data)
 
 	/*
 	 * Acknowledge failure:
-	 * In master transmitter mode a Stop must be generated by software
+	 * In controller transmitter mode a Stop must be generated by software
 	 */
 	if (status & STM32F4_I2C_SR1_AF) {
 		if (!(msg->addr & I2C_M_RD)) {
@@ -749,7 +749,7 @@ static u32 stm32f4_i2c_func(struct i2c_adapter *adap)
 }
 
 static const struct i2c_algorithm stm32f4_i2c_algo = {
-	.master_xfer = stm32f4_i2c_xfer,
+	.xfer = stm32f4_i2c_xfer,
 	.functionality = stm32f4_i2c_func,
 };