MLK-13186-2 arm: imx6qp: add imx6qp standalone pcie dtb

In order to pass the pcie gen2 compliance tests on imx6qp
sd revb board, add one standalone imx6qp sd ldo pcie dtb
- disalbe fec/sata, because that the fec/sata can't work
when pll6 is in bypass mode.
NOTE: Bypass mode of pll6 is mandatory required when
external oscillator is used as pcie ref clk.

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>

Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt

@@ -16,6 +16,7 @@ Required properties:
 	- "msi": The interrupt that is asserted when an MSI is received
 - clock-names: Must include the following additional entries:
 	- "pcie_phy"
+- ext_osc: use the external oscillator or not.
 
 Optional properties:
 - fsl,tx-deemph-gen1: Gen1 De-emphasis value. Default: 0

arch/arm/boot/dts/Makefile

@@ -483,6 +483,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6qp-sabresd-btwifi.dtb \
 	imx6qp-sabresd-hdcp.dtb \
 	imx6qp-sabresd-ldo.dtb \
+	imx6qp-sabresd-ldo-pcie-cert.dtb \
 	imx6qp-zii-rdu2.dtb
 dtb-$(CONFIG_SOC_IMX6SL) += \
 	imx6sl-evk.dtb \

arch/arm/boot/dts/imx6qp-sabresd-ldo-pcie-cert.dts

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2016 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "imx6qp-sabresd-ldo.dts"
+
+&fec {
+	status = "disabled";
+};
+
+&pcie {
+	ext_osc = <1>;
+};
+
+&sata {
+	status = "disabled";
+};