aocxd sets thread scheduler to SCHED_FIFO. This is so audio processing
in aocxd can run without glitching.
vndbinder:11464: type=1400 audit(0.0:17): avc: denied { sys_nice } for capability=23 scontext=u:r:aocxd:s0 tcontext=u:r:aocxd:s0 tclass=capability permissive=0
BUG: 318791959
Change-Id: I9c9148aa7b18ce525091f93956e112b4c178a129