hw/pci-host/versatile.c: Update autodetect to detect newer kernels
Newer versatilepb kernels still don't get the IRQ mapping right for the PCI controller, but they get it differently wrong (they add a fixed +64 offset to everything they write to PCI_INTERRUPT_LINE). Update the autodetection to handle these too, and include a more detailed comment on the various different behaviours that might be present. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Message-id: 1368545616-22344-3-git-send-email-peter.maydell@linaro.org Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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