ARM: dts: imx7d: Add node for PCIe PHY

This adds the PHY as a new node. The PCI-e controller node gains a
phandle property that points to it.

There isn't yet any code in the kernel that uses this device's
registers, but it will be added for a PCIe PLL erratum workaround.
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

arch/arm/boot/dts/imx7d.dtsi

@@ -96,6 +96,14 @@ intc: interrupt-controller@31001000 {
 	};
 };
 
+&aips2 {
+	pcie_phy: pcie-phy@306d0000 {
+		  compatible = "fsl,imx7d-pcie-phy";
+		  reg = <0x306d0000 0x10000>;
+		  status = "disabled";
+	};
+};
+
 &aips3 {
 	usbotg2: usb@30b20000 {
 		compatible = "fsl,imx7d-usb", "fsl,imx27-usb";
@@ -173,6 +181,7 @@ pcie: pcie@33800000 {
 			 <&src IMX7_RESET_PCIE_CTRL_APPS_EN>,
 			 <&src IMX7_RESET_PCIE_CTRL_APPS_TURNOFF>;
 		reset-names = "pciephy", "apps", "turnoff";
+		fsl,imx7d-pcie-phy = <&pcie_phy>;
 		status = "disabled";
 	};
 };