Log Message:
hwloc: updated to 1.11.12

Version 1.11.12
* Fix a corner case of hwloc_topology_restrict() where children would
  become out-of-order.
* Fix the return length of export_xmlbuffer() functions to always
  include the ending \0.

Version 1.11.11
* Add support for Hygon Dhyana processors in the x86 backend,
  thanks to Pu Wen for the patch.
* Fix symbol renaming to also rename internal components,
  thanks to Evan Ramos for the patch.
* Fix build on HP-UX, thanks to Richard Lloyd for reporting the issues.
* Detect PCI link speed without being root on Linux >= 4.13.