PCI: kirin: Fix reset gpio name

As documented in the devicetree bindings (pci/kirin-pcie.txt) and the
reset gpio name must be 'reset-gpios'. However, current driver
erroneously looks for a 'reset-gpio' resource which makes the driver
probe fail. Fix it.

Fixes: fc5165db ("PCI: kirin: Add HiSilicon Kirin SoC PCIe controller driver")
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
[lorenzo.pieralisi@arm.com: updated the commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Xiaowei Song <songxiaowei@hisilicon.com>

drivers/pci/dwc/pcie-kirin.c

@@ -486,7 +486,7 @@ static int kirin_pcie_probe(struct platform_device *pdev)
 		return ret;
 
 	kirin_pcie->gpio_id_reset = of_get_named_gpio(dev->of_node,
-						      "reset-gpio", 0);
+						      "reset-gpios", 0);
 	if (kirin_pcie->gpio_id_reset < 0)
 		return -ENODEV;