Incorrect source stride setting for software YUV buffer copy causes
the software converter used by apps like Video Telephony app to
crash. Correct the source stride setting passed to YUV buffer memcpy.
CRs-Fixed: 346928
(cherry picked from commit db92bedc081365e447233bbdd6e070e88a5cbc19)
Change-Id: I5edf7ff4d38e8b55eece9e856adeeab972e80fa0