Add Bootloader Assert

Per cyanogen, users on older bootloader/basebands are prone to
adverse behavior in respect to recent commits for the device.

Add assert to alert user to begin firmware update process manually.

Change-Id: I332a5cd81a8ecf4a28fd278d448bb1a9a6c44158
hammerhead: Remove deprecated flag

Change-Id: Id52576dd2262eca00292a90511245445dab2ae08
hammerhead: Make SYSTEM owner of cpu online files

This is required for the Settings app to online cpus
before writing to cpufreq files.

Change-Id: I63530bfcf095a0fbc432a908272bc89bb1ad89eb
hh: Collapse primary audio outputs

 * These are exactly the same. Just OR the flags together instead of
   confusing the HAL.
 * This appears to fix the occasional crackle on low-latency streams
   on other devices, so adding it here.

Change-Id: Id27093a09e6d0e296714221eae9f59f6d431f758
hh: Better scaling values

 * Default slack is too long and boost is too high, these values
   collide. Fix them.
 * Set a better timer_rate to reduce jitter

Change-Id: Id99c1642ca38d184e75d09bd3afc71951a8801c0