Update the fsl,imx6q-pcie.yaml to include the reset-gpios property in
the Root Port node.

There is already 'reset-gpios' property defined for PERST# in
pci-bus-common.yaml, so use that property instead of 'reset-gpio' in
this file, for backward compatibility, do not remove the existing
property in the bridge node, but mark them as 'deprecated' instead.

Signed-off-by: Sherry Sun <redacted>
---
 .../bindings/pci/fsl,imx6q-pcie.yaml          | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 12a01f7a5744..74156b42e7a2 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml

@@ -59,9 +59,12 @@ properties:
       - const: dma
 
   reset-gpio:
+    deprecated: true
     description: Should specify the GPIO for controlling the PCI bus device
       reset signal. It's not polarity aware and defaults to active-low reset
       sequence (L=reset state, H=operation state) (optional required).
+      This property is deprecated, instead of referencing this property from the
+      host bridge node, use the reset-gpios property from the root port node.
 
   reset-gpio-active-high: