blu_active: sync up with android-4.4 linux, bring back fastlane (revamped)

Get rid of scheduler stuff, add some CAF patches

Signed-off-by: engstk <eng.stk@sapo.pt>
[@nathanchance: fix conflicts]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>

Change-Id: Ib95bb30ce04ddd60c7bce44f6592f6dd13a795fa