spi: rzv2h-rspi: make resets optional

The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs don't have
reset lines for the SPI peripheral, make them optional to prepare for
adding support for them.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Link: https://patch.msgid.link/20251119161434.595677-2-cosmin-gabriel.tanislav.xa@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Demon000

drivers/spi/spi-rzv2h-rspi.c

@@ -384,8 +384,8 @@ static int rzv2h_rspi_probe(struct platform_device *pdev)
 
 	rspi->resets[0].id = "presetn";
 	rspi->resets[1].id = "tresetn";
-	ret = devm_reset_control_bulk_get_exclusive(dev, RSPI_RESET_NUM,
-						    rspi->resets);
+	ret = devm_reset_control_bulk_get_optional_exclusive(dev, RSPI_RESET_NUM,
+							     rspi->resets);
 	if (ret)
 		return dev_err_probe(dev, ret, "cannot get resets\n");