Looks like a big.LITTLE cpufreq fix didn't get marked for stable and so
is missing from LSK 3.10 and 3.14. It's commit 8f3ba3d3257be8 (cpufreq:
arm_big_little: set 'physical_cluster' for each CPU)

Just spend a couple of days debugging a problem that turned out to be
this. Can we get it added to the LSKs or should it go to stable trees
first?