ACPI: Device [kobj-name] is not power manageable

print kobj name in this message.
lenb changed to use printk.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>