Sepolicy : Do not audit untrusted_app_27 to fix avc denials

Add do not audit rule for unrusted_app_27 to fix AVC
denials for gpubusy and max_gpuclk props

denial:
type=1400 audit(0.0:465): avc: denied { read } for name="max_gpuclk" dev="sysfs"
ino=56328 scontext=u:r:untrusted_app_27:s0:c178,c256,c512,c768 
tcontext=u:object_r:sysfs_kgsl:s0 tclass=file permissive=0 app=com.gameloft.android.ANMP.GloftA9HM

type=1400 audit(0.0:381): avc: denied { read } for name="gpubusy" dev="sysfs" 
ino=56330 scontext=u:r:untrusted_app_27:s0:c168,c256,c512,c768 
tcontext=u:object_r:sysfs_kgsl:s0 tclass=file permissive=0 app=com.tencent.ig

Change-Id: If11c109b5426c598121cff045ad1693d2221d57e