pci: pcie_dw_rockchip: Add rk3588 compatible

Add compatible for RK3588 SoC.

Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/pci/pcie_dw_rockchip.c b/drivers/pci/pcie_dw_rockchip.c
index 8b0f0c8..8ef4d63 100644
--- a/drivers/pci/pcie_dw_rockchip.c
+++ b/drivers/pci/pcie_dw_rockchip.c
@@ -468,6 +468,7 @@
 
 static const struct udevice_id rockchip_pcie_ids[] = {
 	{ .compatible = "rockchip,rk3568-pcie" },
+	{ .compatible = "rockchip,rk3588-pcie" },
 	{ }
 };