omni: build proper package for exfat support

Change-Id: I482ba137c3a6d7caae1dabcbfb9593725ceafcc8
diff --git a/sepolicy/private/file_contexts b/sepolicy/private/file_contexts
index a5b933d..dbfbcac 100644
--- a/sepolicy/private/file_contexts
+++ b/sepolicy/private/file_contexts
@@ -7,7 +7,7 @@
 /sys/block/[^/]+/queue/scheduler                  u:object_r:sysfs_block_scheduler:s0
 
 /system/bin/fsck\.ntfs                            u:object_r:fsck_exec:s0
-/system/bin/mount\.exfat                           u:object_r:fsck_exec:s0
+/system/bin/mkfs\.exfat                           u:object_r:fsck_exec:s0
 
 /system/bin/vncflinger                             u:object_r:vncflinger_exec:s0
 /system/bin/vncpasswd                             u:object_r:vncflinger_exec:s0