ACPI: add acpi_bus_removal_type in acpi_device

Add removal_type in structure acpi_device for hot removal.

ACPI_BUS_REMOVAL_EJECT is used for ACPI device hot removal.
Only one parameter is allowed in .remove method due to driver model.
So removal_type is added to indicate different removal type.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

include/acpi/acpi_bus.h

@@ -301,6 +301,7 @@ struct acpi_device {
 	void *driver_data;
 	struct device dev;
 	struct acpi_bus_ops bus_ops;	/* workaround for different code path for hotplug */
+	enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
 };
 
 #define acpi_driver_data(d)	((d)->driver_data)