m8: add assert on bootloader version

* Per Steve - HTC turned on continuous splash and the new kernel expects it
* Without an updated bootloader, recovery will fail

Change-Id: I6ef41d706445e26385137deefb7898cc66e0bcbc
props: enable third camera

Change-Id: Ieccef3e8e9882fffcb01300bba9b2db091bb4742