mm-video : vidc : Add proper stride for RGBA8888 color format

For RGBA8888 color format stride will be caluculated by GPU.
This stride is part of gralloc handle. The color converter
needs to use this value rather calcualting by itself.
This change fixes the same.

Change-Id: I3250c6978120793a9072e0914cfd249299be07b1
CRs-Fixed: 485996
5 files changed