[3/4] exFAT Support

FUSE based exFAT Implementation

 (1/4) manifest: https://gerrit.slimroms.net/6927
 (2/4) vendor: https://gerrit.slimroms.net/5445
 (3/4) sepolicy (vendor): https://gerrit.slimroms.net/7161
 (4/4) vold: https://gerrit.slimroms.net/6983

Signed-off-by: Humberto Borba <humberos@gmail.com>
Signed-off-by: Utkarsh Gupta <utkarsh.eminem@gmail.com>

Change-Id: Iafd8ef3e99d9e31cb5fc9a524e1f4e985bea252e