[v2] include: move out private definitions from hotplug.h
Public server module API shouldn't be clobbered with private definitions, thus move them out to private header.
changes v2:
- changed _xf86_get_platform_device_attrib() and _xf86_get_platform_device_int_attrib() from inlined to real functions, so struct OdevAttributes doesn't need to be exposed anymore
Edited by Enrico Weigelt, metux IT consult .