build: Add QCOM target-specific config

 * Needed to support global DirectTract config on legacy targets
 * Let's also eliminate some boilerplate

Change-Id: I668a79e3900219faf2c0b220895700d51a50d813
MR2.1 - Version 4.4.4.  Here we go!  DO NOT MERGE

Make is so.

Change-Id: I06b8c8c491e6e355124b6fea41893155ea4c07d0
"KTU84P"
Merge tag 'android-4.4.4_r1' into HEAD

Android 4.4.4 Release 1
Support legacy qcom audio variant

Change-Id: I592c6b19f08826985139695df66673d46a685004
Merge pull request #4 from omnirom/android-4.4

sync