README.ompi: track patches added to hwloc

Track post-v1.11.3-release patches applied to the hwloc copy embedded
in Open MPI.

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>

opal/mca/hwloc/hwloc1113/README-ompi.txt

@@ -2,3 +2,4 @@ Cherry-picked commits after 1.11.3:
 
 open-mpi/hwloc@9549fd59af04dca2e2340e17f0e685f8c552d818
 open-mpi/hwloc@0ab7af5e90fc2b58be30b2126cc2a73f9f7ecfe9
+open-mpi/hwloc@8b44fb1c812d01582887548c2fc28ee78255619