[rbp/omxplayer] Prevent timeout error that occurs because of waiting for port settings change event…

...on the wrong pipeline object when using deinterlaced mode

log-file output:
23:07:46 T:2871821376   ERROR: COMXCoreComponent::WaitForEvent OMX.broadcom.video_decode wait event 0x00000003 timeout 300
23:07:46 T:2871821376   ERROR: COMXVideo::Decode - error m_omx_decoder.WaitForEvent(OMX_EventPortSettingsChanged) omx_err(0x7fffffff)