pmdabpftrace: add conditional for stdin feature
pmdabpftrace: add conditional for stdin feature

bpftrace supports reading bpftrace scripts from stdin since version
0.11.0

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp