Fix MMAP audio avc denied

03-30 16:45:16.840   738   738 I auditd  : type=1400 audit(0.0:76): avc:
denied { read } for comm="HwBinder:738_2"
name="u:object_r:audio_prop:s0" dev="tmpfs" ino=87
scontext=u:r:hal_audio_default:s0 tcontext=u:object_r:audio_prop:s0
tclass=file permissive=0
03-30 16:45:16.980   644   644 I auditd  : type=1400 audit(0.0:78): avc:
denied { map } for comm="audioserver" path="/dev/snd/pcmC0D0p"
dev="tmpfs" ino=977 scontext=u:r:audioserver:s0
tcontext=u:object_r:audio_device:s0 tclass=chr_file permissive=0

Bug: 165737390
Test: verified with the forrest ROM and error log gone
Change-Id: I1c8721a051844d3410cffa23411a434c832b416e
2 files changed