Skip dex-preopting prebuilts to save system image space

Reference

build/core/prebuilt_internal.mk

ifeq ($(DONT_DEXPREOPT_PREBUILTS),true)
LOCAL_DEX_PREOPT := false
endif
Enable f2fs on /data & /cache
Revert: wifi commits (reverted from commit 6d16b55ef3f44ae1147135e03ce73f2bd45b57cb)
Update fstab
hlte-common: move blobs to device specific trees
hlte-common: remove qpngd and qpngp from init
hlte-common:  Use 48KHz sampling rate for A2DP
Merge remote-tracking branch 'upstream/cm-12.0' into cm-12.0

Conflicts:
	BoardConfigCommon.mk
	rootdir/etc/fstab.qcom