omni: Fix vold sepolicy denials

like and all others

10-03 23:34:22.422   552   552 W binder:552_1: type=1400 audit(0.0:211): avc: denied { execute } for name="mkfs.exfat" dev="dm-0" ino=1463 scontext=u:r:vold:s0 tcontext=u:object_r:mkfs_exec:s0 tclass=file permissive=0

Change-Id: I0503f3ebce228dfaab14c0c2e49273a4f851ae0a
1 file changed