spi/pxa2xx: fix runtime PM enabling order

In commit 7dd62787 (spi/pxa2xx: Convert
to core runtime PM) master->auto_runtime_pm was set to true.

In this case pm_runtime_enable() must be called *before*
spi_register_master(), otherwise the kernel hangs with this error
message:

  spi_master spi0: Failed to power device: -13

A similar fix, but for spi/hspi, was applied in
268d7643.
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Mark Brown <broonie@linaro.org>

drivers/spi/spi-pxa2xx.c

@@ -1202,6 +1202,11 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	tasklet_init(&drv_data->pump_transfers, pump_transfers,
 		     (unsigned long)drv_data);
 
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_set_active(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+
 	/* Register with the SPI framework */
 	platform_set_drvdata(pdev, drv_data);
 	status = devm_spi_register_master(&pdev->dev, master);
@@ -1210,11 +1215,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 		goto out_error_clock_enabled;
 	}
 
-	pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
-	pm_runtime_use_autosuspend(&pdev->dev);
-	pm_runtime_set_active(&pdev->dev);
-	pm_runtime_enable(&pdev->dev);
-
 	return status;
 
 out_error_clock_enabled: