BoardConfig: Use Qualcomm optimizations for Bionic libs

By enabling TARGET_USE_QCOM_BIONIC_OPTIMIZATION, there are
noticeable improvements in terms of performance.
This option allows to use optimized assembly routines for
some math operations (sin, cosin, e_power, e_sqrt, e_sqrtf)
for bionic libm library.

Change-Id: If46782c1de9eb0d99ded13cecf72b1875d19d2c3