lib/utils.c: ensure calling get_psched_settings() for nl_us2ticks()/nl_ticks2us()

(cherry picked from commit c33dec5a4a7df01730f90dd41f28a53c188aab46)

Test: Compiles and ueventd proc_net denial is gone.
Bug: 35197529
Change-Id: I09dbc1f36089c58f7965b26bf8a632a4865c3865
1 file changed