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.

picked from: https://github.com/LegacyXperia/android_device_semc_msm7x30-common/commit/b72c2725bd87ecb17c31c5f94ae6750612ee060b

Change-Id: Ic8404d6859ac1e6c9b4a0b204a3be26aedba5976