MAINTAINERS: device property: ACPI: add fwnode.h

ACPI is impacted by changes to fwnode.h, add a file entry
to ACPI

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

MAINTAINERS

@@ -301,6 +301,7 @@ S:	Supported
 F:	drivers/acpi/
 F:	drivers/pnp/pnpacpi/
 F:	include/linux/acpi.h
+F:	include/linux/fwnode.h
 F:	include/acpi/
 F:	Documentation/acpi/
 F:	Documentation/ABI/testing/sysfs-bus-acpi