MA-7240-1 KernelUidCpuTimeReader exception in mm6.0 Add proc node /proc/uid_cputime/show_uid_stat

proc: uid: Adds accounting for the cputimes per uid.

Adds proc files /proc/uid_cputime/show_uid_stat and

show_uid_stat lists the total utime and stime for the active as well as
terminated processes for each of the uids.

Writing a range of uids to remove_uid_range will delete the accounting
for all the uids within that range.

Change-Id: I21d9210379da730b33ddc1a0ea663c8c9d2ac15b
3 files changed