spi: bcm63xx-spi: fix pm_runtime

The driver sets auto_runtime_pm to true, but it doesn't call
pm_runtime_enable(), which results in "Failed to power device" when PM support
is enabled.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://lore.kernel.org/r/20210223151851.4110-2-noltari@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-bcm63xx.c

@@ -593,11 +593,13 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
 
 	bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS);
 
+	pm_runtime_enable(&pdev->dev);
+
 	/* register and we are done */
 	ret = devm_spi_register_master(dev, master);
 	if (ret) {
 		dev_err(dev, "spi register failed\n");
-		goto out_clk_disable;
+		goto out_pm_disable;
 	}
 
 	dev_info(dev, "at %pr (irq %d, FIFOs size %d)\n",
@@ -605,6 +607,8 @@ static int bcm63xx_spi_probe(struct platform_device *pdev)
 
 	return 0;
 
+out_pm_disable:
+	pm_runtime_disable(&pdev->dev);
 out_clk_disable:
 	clk_disable_unprepare(clk);
 out_err: