sepolicy: Grant system_server and init access to /proc/pressure/memory

Need ability for system components to access psi memory pressure file.
Add required permissions for system_server and init to access
/proc/pressure/memory file.

Bug: 129476847
Test: system_server can read /proc/pressure/memory
Change-Id: I10ce4f4fe0e3618fa77539e93246d0aae933082c
Signed-off-by: Tim Murray <timmurray@google.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
2 files changed