quoted

+/* The hardware exposes 3 ports. Port 0 (WiFi and Bluetooth) is 
special, as it
+ * is power-gated by SMC to facilitate rfkill.
+ */
+enum apple_pcie_port {
+	APPLE_PCIE_PORT_RADIO    = 0,
+	APPLE_PCIE_PORT_USB      = 1,
+	APPLE_PCIE_PORT_ETHERNET = 2,
+	APPLE_PCIE_NUM_PORTS
+};

This will also be used for the Thunderbolt ports, where this enum
won't apply at all. I could also see Apple changing the individual port
assignments in the future. I'd just remove it here and have this file be
a generic PCIe driver for Apple SoCs.

Removed in v2.

As above, I don't think it makes sense to special-case anything for the
devices on the bus here. These controllers also have hot plug support,
so the radios don't have to be on by the time it's initialized.
We could also just turn them on in the bootloader for now.

This should be fixed in v2 with Mark's device tree bindings.