ramips: set rt2880 pci controller of_node

Set the PCI controller of_node such that PCI devices can be
instantiated via device tree.

Signed-off-by: Mathias Kresin <dev@kresin.me>

target/linux/ramips/patches-4.14/0002-MIPS-pci-rt2880-set-pci-controller-of_node.patch

@@ -0,0 +1,32 @@
+From 0eb1cfffd5433d8dce3e4163a5cd9accc6000856 Mon Sep 17 00:00:00 2001
+From: Tobias Wolf <dev-NTEO@vplace.de>
+Date: Wed, 5 Sep 2018 08:51:26 +0200
+Subject: [PATCH] MIPS: pci-rt2880: set pci controller of_node
+
+Set the PCI controller of_node such that PCI devices can be
+instantiated via device tree.
+
+Signed-off-by: Tobias Wolf <dev-NTEO@vplace.de>
+Signed-off-by: Mathias Kresin <dev@kresin.me>
+Acked-by: John Crispin <john@phrozen.org>
+Signed-off-by: Paul Burton <paul.burton@mips.com>
+Patchwork: https://patchwork.linux-mips.org/patch/20423/
+Cc: Ralf Baechle <ralf@linux-mips.org>
+Cc: James Hogan <jhogan@kernel.org>
+Cc: linux-mips@linux-mips.org
+Cc: linux-kernel@vger.kernel.org
+---
+ arch/mips/pci/pci-rt2880.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/arch/mips/pci/pci-rt2880.c
++++ b/arch/mips/pci/pci-rt2880.c
+@@ -246,6 +246,8 @@ static int rt288x_pci_probe(struct platf
+ 	rt2880_pci_write_u32(PCI_BASE_ADDRESS_0, 0x08000000);
+ 	(void) rt2880_pci_read_u32(PCI_BASE_ADDRESS_0);
+ 
++	rt2880_pci_controller.of_node = pdev->dev.of_node;
++
+ 	register_pci_controller(&rt2880_pci_controller);
+ 	return 0;
+ }