base-stats: HDF5 calls with better compatibility

H5Object.getObjName() is added at HDF5 V1.8.13.
As an example, compilation error would be thrown on CentOS 7.
obj.getObjnameByIdx(obj.getId()) would work with older versions.

Change-Id: I104eaac050db7501ab3a1aa3ad6dc1ee8b8d7e22
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53283
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed