pmdalinux: fix macro name to reflect procfs contents
pmdalinux: fix macro name to reflect procfs contents

No functional change, just an (unused) incorrect macro name.

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