Add various bits of code needed to support i.MX7D variant of the IP.

Cc: yurovsky at gmail.com
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Lee Jones <redacted>
Cc: linux-arm-kernel at lists.infradead.org
Cc: devicetree at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Signed-off-by: Andrey Smirnov <redacted>
---
 .../devicetree/bindings/pci/fsl,imx6q-pcie.txt     |   6 +-
 drivers/pci/host/pci-imx6.c                        | 188 ++++++++++++++++++---
 include/linux/mfd/syscon/imx7-gpc.h                |  18 ++
 include/linux/mfd/syscon/imx7-iomuxc-gpr.h         |   4 +
 include/linux/mfd/syscon/imx7-src.h                |  18 ++
 5 files changed, 208 insertions(+), 26 deletions(-)
 create mode 100644 include/linux/mfd/syscon/imx7-gpc.h
 create mode 100644 include/linux/mfd/syscon/imx7-src.h

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
index 83aeb1f..20b9382 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.txt

@@ -4,7 +4,8 @@ This PCIe host controller is based on the Synopsis Designware PCIe IP
 and thus inherits all the common properties defined in designware-pcie.txt.
 
 Required properties:
-- compatible: "fsl,imx6q-pcie", "fsl,imx6sx-pcie", "fsl,imx6qp-pcie"
+- compatible: "fsl,imx6q-pcie", "fsl,imx6sx-pcie",
+  	      "fsl,imx6qp-pcie", "fsl,imx7d-pcie"

 - reg: base address and length of the PCIe controller
 - interrupts: A list of interrupt outputs of the controller. Must contain an
   entry for each entry in the interrupt-names property.

@@ -34,6 +35,9 @@ Additional required properties for imx6sx-pcie:
 - clock names: Must include the following additional entries:
 	- "pcie_inbound_axi"
 
+Additional required properties for imx7d-pcie:
+- pcie-phy-supply: Should specify the regulator supplying PCIe PHY
+
 Example:
 
 	pcie at 0x01000000 {