stagefright: Fix cts issue with divx test

8909 is using soft-ip divx decoder using component
name starts with "OMX.ittiam." instead of "OMX.qcom."
leading to FFMPEGSoftCodec override with wrong compression
format using OMX_VIDEO_CodingDIVX (0x7F000003) defined in
OMX_FFMPEG_Extn.h. But qcom omx component actually use
QOMX_VIDEO_CodingDivx (0x7FA30C02) which defined in OMX_QCOMExtns.h.

Add checking for OMX.ittiam in additional to OMX.qcom solved the
problem.

FEIJ-700

Change-Id: I4071eb3978974d1072373f0c88ea83653c0c53a9