prepare device for encryption (data and internal sdcard)

Change-Id: Ic73a6602a39a7f657e924ed758351154c15204e9

Signed-off-by: tonyp <tonyptonyp@gmail.com>

Conflicts:
	ramdisk/fstab.star
remove duplicate 'vold.post_fs_data_done'

Change-Id: I2b3bdc30a78a9dda0d50a7d2a34a1078e4ed97ab
Bump min CPU speed back to 1200