Add a HAF access permission

This is signature protected, and extremely dangerous since it
grants system GID.

Change-Id: I2528813de9341187f18ef708e7251b4e5e4003a3
Revert "DeviceUtils:  add some commonly used helper functions from kk44"

The use of these is unnecessary. Find cleaner ways to accomplish the things that needed them.

This reverts commit 5a20b5e348511ef49971aecc2382a050d5eaf372

Change-Id: Ia4d24b4a21aa5e4331852bba2e8ac0add33e1bd0
Merge "Revert "DeviceUtils:  add some commonly used helper functions from kk44"" into L5
Merge branch 'cm' into HEAD
Revert "Revert "DeviceUtils:  add some commonly used helper functions from kk44""

Breaks buiild, can work around // clean up but we need it for now

This reverts commit ee4f71b70b50211c6fcea24161c93aa41f3b64fe.