arm/fdt: Remove 'linux,pci-probe-only' property

PCI now supports configurable BARs. Get rid of the no longer needed,
Linux-only, fdt property.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/1589470709-4104-12-git-send-email-alexandru.elisei@arm.com


Signed-off-by: Will Deacon <will@kernel.org>