spi: sun4i: add support for GPIO chip select lines

Set use_gpio_descriptors to true so that GPIOs can be used for chip
select in accordance with the DT binding.

Signed-off-by: Mans Rullgard <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: mansr

drivers/spi/spi-sun4i.c

@@ -462,6 +462,7 @@ static int sun4i_spi_probe(struct platform_device *pdev)
 	sspi->host = host;
 	host->max_speed_hz = 100 * 1000 * 1000;
 	host->min_speed_hz = 3 * 1000;
+	host->use_gpio_descriptors = true;
 	host->set_cs = sun4i_spi_set_cs;
 	host->transfer_one = sun4i_spi_transfer_one;
 	host->num_chipselect = 4;