Enable QCOM bionic optimizations

benchmark       iterations  Normal ns/op  NEON ns/op
BM_math_sin       10000000  126           109
BM_math_cos       10000000  112           114
BM_math_pow        5000000  375           328
BM_math_sqrt      50000000  496            38
BM_math_sqrtf    100000000  136            25

Change-Id: I674fcd45df703788194ff3df5b330b5f11915aa2
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Merge remote-tracking branch 'upstream/kitkat' into kitkat