Merge changes from topic "msm8916-plats" into integration
* changes:
docs(msm8916): document new platforms
feat(msm8916): add port for MDM9607
refactor(msm8916): handle single core platforms
feat(msm8916): add port for MSM8939
feat(msm8916): power on L2 caches for secondary clusters
feat(msm8916): initialize CCI-400 for multiple clusters
refactor(msm8916): handle multiple CPU clusters
feat(msm8916): add port for MSM8909
feat(msm8916): clear CACHE_LOCK for MMU-500 r2p0+
style(msm8916): add missing braces to while statements