PCI: dwc: Add MSI-X callbacks handler
Add PCIe config space capability search function. Add sysfs set/get interface to allow the change of EP MSI-X maximum number. Add EP MSI-X callback for triggering interruptions. Signed-off-by: NGustavo Pimentel <gustavo.pimentel@synopsys.com> Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: NKishon Vijay Abraham I <kishon@ti.com>
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