spi: bcm2835: use devm_spi_register_master()

Use devm_spi_register_master() to make cleanup paths simpler,
and remove a duplicate put.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-bcm2835.c

@@ -358,7 +358,7 @@ static int bcm2835_spi_probe(struct platform_device *pdev)
 	bcm2835_wr(bs, BCM2835_SPI_CS,
 		   BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
 
-	err = spi_register_master(master);
+	err = devm_spi_register_master(&pdev->dev, master);
 	if (err) {
 		dev_err(&pdev->dev, "could not register SPI master: %d\n", err);
 		goto out_free_irq;
@@ -381,14 +381,12 @@ static int bcm2835_spi_remove(struct platform_device *pdev)
 	struct bcm2835_spi *bs = spi_master_get_devdata(master);
 
 	free_irq(bs->irq, master);
-	spi_unregister_master(master);
 
 	/* Clear FIFOs, and disable the HW block */
 	bcm2835_wr(bs, BCM2835_SPI_CS,
 		   BCM2835_SPI_CS_CLEAR_RX | BCM2835_SPI_CS_CLEAR_TX);
 
 	clk_disable_unprepare(bs->clk);
-	spi_master_put(master);
 
 	return 0;
 }