pci/hotplug/pnv-php: Wrap warnings in macro

[ Upstream commit 748ac391ab9acd8d7f3c93cbf3e63c773c0b2638 ]

An opencapi slot doesn't have an associated bridge device. It's not
needed for operation, but any warning is displayed through pci_warn()
which uses the pci_dev struct of the assocated bridge device. So wrap
those warning so that a different trace mechanism can be used if it's
an opencapi slot.

Reviewed-by: Alastair D'Silva <alastair@d-silva.org>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191121134918.7155-11-fbarrat@linux.ibm.com


Stable-dep-of: 466861909255 ("PCI: pnv_php: Clean up allocated IRQs on unplug")
Signed-off-by: Sasha Levin <sashal@kernel.org>