Support legacy qcom audio variant

Change-Id: I07162950eec12ef5a859020a4f456add6abb6f35
build: Add new public keys to recovery

Change-Id: I11dea464297813be36e60c23728dde8893535c46
Merge branch 'pac-4.4' of git://github.com/PAC-man/android_build into pac-4.4