spi: spi-fsl-dspi: Use spi_alloc_target for target

spi_alloc_target should be used for target devices. This also sets
ctlr->target automatically so delete that line.

Signed-off-by: Marius Trifu <marius.trifu@nxp.com>
Signed-off-by: Larisa Grigore <larisa.grigore@nxp.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250522-james-nxp-spi-v2-7-bea884630cfb@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Marius Trifu

drivers/spi/spi-fsl-dspi.c

@@ -1366,7 +1366,10 @@ static int dspi_probe(struct platform_device *pdev)
 	if (!dspi)
 		return -ENOMEM;
 
-	ctlr = spi_alloc_host(&pdev->dev, 0);
+	if (of_property_read_bool(np, "spi-slave"))
+		ctlr = spi_alloc_target(&pdev->dev, 0);
+	else
+		ctlr = spi_alloc_host(&pdev->dev, 0);
 	if (!ctlr)
 		return -ENOMEM;
 
@@ -1405,9 +1408,6 @@ static int dspi_probe(struct platform_device *pdev)
 		of_property_read_u32(np, "bus-num", &bus_num);
 		ctlr->bus_num = bus_num;
 
-		if (of_property_read_bool(np, "spi-slave"))
-			ctlr->target = true;
-
 		dspi->devtype_data = of_device_get_match_data(&pdev->dev);
 		if (!dspi->devtype_data) {
 			dev_err(&pdev->dev, "can't get devtype_data\n");