gralloc: Use adreno_utils api for NV21 and NV12 alignment

Use adreno_utils api to get stride alignment requirement by GPU for
NV21 & NV12 formats. It is required to keep Camera & Gralloc in sync.

CRs-Fixed: 880927
Change-Id: Ie71f864c975e38fe4aa58735cc8ffe9dd0734f4f
2 files changed