PCIe has a range property, so the unit name should contain an address.
Make use of the label to enable individual PCIe busses. Also, fixup
the synology dtsi file which added a label pcie2 rather than using the
existing pcie1 label.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>