4.3 fstab fix up

Change-Id: I66ab430ddca3d2cfcfb9e2c4472e64936c954fec
 disabling wifi p2p for now

Change-Id: I07f11acb640e39581dcfd5f540ce008e0fb4784b
let the enrc2b fstab deal with everything instead of vold

Change-Id: I012eac24dff5705341cf60955dbbbda23b284985