init: fixup cpufreq permissions

Moved patches from init.rc

https://gerrit.omnirom.org/#/c/2919/

It is safe to have read permissions for everyone
Also required for the CPU info overlay service
PS3:
add cpu0-cpu3
PS4:
mke this work on at least a few devices :)
Change-Id: I1de067f63121a8a19f29d4e994fbc3bf73054556

init: added missing permissions

https://gerrit.omnirom.org/#/c/2872/

Else PerformanceControl will not be able to change them
-scaling_min_freq
-scaling_governor
-I/O scheduler
Change-Id: I55eb68087e991a906d91009b0a9bc43f0b162635

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: I27faeb876f17116d51f2b8b6e59584509c221d51