Enable intel_pstate for the Ivy Bridge processor

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Merge branch 'backports-3.9' into pf-3.9
enhanceio-3.9: update EnhanceIO against git tree
Merge branch 'enhanceio-3.9' into pf-3.9
version-3.9: bump to v3.9.3-pf
distro-3.9: bump to v3.9.3-pf
Merge branch 'version-3.9' into pf-3.9
Merge branch 'distro-3.9' into pf-3.9