msmx7x27a-common:rootdir: fix symlink /storage/emulated/legacy as /mnt/shell/emulated/0

Change-Id: I1a1e632448860ae36034c35d4f5fdb617339a6a5
msm7x27a-common:libaudio: fix VOIP audio routing

Change-Id: Icd61dd375069f196cb892767214e4fb19e648ed3
msm7x27a-common: enable copybit patch

Change-Id: I9f3d0c93a4689b27c6ae4538a797917cf3462571
Revert "msm7x27a-common: build power hal"

This reverts commit 1842df3df145bb84c217a0ef33460d2a16d02388.

Change-Id: I31e20d195a1c8176c59f8a36908534790523552a