pci-hotplug/pnv_php: Add support for IODA3 Power9 PHBs
Currently we check that an IODA2 compatible PHB is upstream of this slot. This is mainly to avoid pnv_php creating slots for the various "virtual PHBs" that we create for NVLink. There's no real need for this restriction so allow it on IODA3. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190903101605.2890-10-oohall@gmail.com
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