encryption: needed changes to allow encryption of data partition

1) cryptfs.c requires fstab be named fstab.${ro.hardware}
2) include encyptable parameter on /data in fstab
3) formatting /data in recovery leaves 16kb trailing
4) make fstab.qcom available to recovery

Change-Id: I10999b100d3c41ae749f9cba270b0a94d3e8385d

Conflicts:

	device_ville.mk