dt-bindings: PCI: qcom: Add 'global' interrupt for SDM845 SoC

'global' interrupt is used to receive PCIe controller and link specific
events.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250227-pcie-global-irq-v1-11-2b70a7819d1e@linaro.org

Author: Mani-Sadhasivam

Documentation/devicetree/bindings/pci/qcom,pcie.yaml

@@ -602,8 +602,9 @@ allOf:
         - properties:
             interrupts:
               minItems: 8
-              maxItems: 8
+              maxItems: 9
             interrupt-names:
+              minItems: 8
               items:
                 - const: msi0
                 - const: msi1
@@ -613,6 +614,7 @@ allOf:
                 - const: msi5
                 - const: msi6
                 - const: msi7
+                - const: global
 
   - if:
       properties: