mfd: tps65912: Fix variable name for SPI remove

The SPI interface is mostly a copy/paste from the I2C interface with some
minor renaming for consistency. "Client" is an I2C specific term that
was left in the SPI remove path, rename this here.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/tps65912-spi.c

@@ -49,9 +49,9 @@ static int tps65912_spi_probe(struct spi_device *spi)
 	return tps65912_device_init(tps);
 }
 
-static int tps65912_spi_remove(struct spi_device *client)
+static int tps65912_spi_remove(struct spi_device *spi)
 {
-	struct tps65912 *tps = spi_get_drvdata(client);
+	struct tps65912 *tps = spi_get_drvdata(spi);
 
 	return tps65912_device_exit(tps);
 }