spi: slave-mt27xx: switch to use spi_alloc_target()

Switch to use modern name function spi_alloc_target().

No functional changed.

Signed-off-by: Yang Yingliang <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/spi/spi-slave-mt27xx.c

···
 	int irq, ret;
 	const struct of_device_id *of_id;
 
-	ctlr = spi_alloc_slave(&pdev->dev, sizeof(*mdata));
+	ctlr = spi_alloc_target(&pdev->dev, sizeof(*mdata));
 	if (!ctlr) {
-		dev_err(&pdev->dev, "failed to alloc spi slave\n");
+		dev_err(&pdev->dev, "failed to alloc spi target\n");
 		return -ENOMEM;
 	}