ueventd: restorecon sysfs files

Allow cpufreq governor tuning files to be labelled correctly after
switching governor.

Change-Id: I3e0fd310aaacbb4e647e42597d38040774257955
Merge remote-tracking branch 'cyanogen/cm-10.2' into cm-10.2
Merge branch 'cm-10.2' of https://github.com/Quarx2k/android_system_core into PAC4.3