Jetson/L4T/r28.2.1 patches

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Camera

Fix missing timestamp for vi4
Symptom/observe: can not get the timestamp by v4l2 interface
https://forums.developer.nvidia.com/t/52066/15
Fix FE syncpt wait (observe first 3 green/corruption frames)
Symptom/observe: first few green/corruption frames
https://forums.developer.nvidia.com/t/63731/4
Error handling mechanism for T186 (recovery mechanism)
Symptom/observe: feature implement for T186.
https://forums.developer.nvidia.com/t/63478/6
Fix multiple sources per single session can't launch 4 and above sensors.
Symptom/observe: Argus - Syncing multiple source single session can't open 4 and above sensors.
https://forums.developer.nvidia.com/t/64817/15
Fix argus_camera launch failure with CSI-camera + USB-camera
Symptom/observe: CSI-cameras is able to capture with v4l2 or gstreamer, but argus_camera launching failed with USB-camera connected
https://forums.developer.nvidia.com/t/63269/10
Add low_latency_mode control for latency support.
add "--set-ctrl low_latency_mode=1" to the capture command line.
https://forums.developer.nvidia.com/t/63731/4

Multimedia

[MMAPI]Cannot run NvVideoDecoder in loop/Memory leak in NvVideoEncoder
https://forums.developer.nvidia.com/t/66835/3
[MMAPI]Fail to decode via NvJpegdecoder
https://forums.developer.nvidia.com/t/66624/3
[MMAPI]Cannot run nvjpeg encoder on child process
https://forums.developer.nvidia.com/t/66627/12
[GSTREAMER]Hit segment fault wilie linking nvjpegenc and nvjpegdec
https://forums.developer.nvidia.com/t/107465/11
[GSTREAMER]Memory leak in nvcompositor
https://forums.developer.nvidia.com/t/63904/4
[GSTREAMER]fix temporal-tradeoff is not working
https://forums.developer.nvidia.com/t/68699/5

Serial

Fix TTY rt-flush thread not seeing data
Symptom/observe: When using rt-flush on a serial-port, data is only available after 256 bytes have been received
https://devtalk.nvidia.com/default/topic/1066196/jetson-tx2/running-tx2-serial-port-with-rt-flush-possible-bug-and-fix-/

IO

[PIN config] DPx_AUX_CH_xx as i2c function.
https://forums.developer.nvidia.com/t/54904/5
[script for flash multiple device]
https://forums.developer.nvidia.com/t/63800/7
[SDMMC] erase speed is slow
https://forums.developer.nvidia.com/t/emmc-performance-regressions-on-tx2-soms/167077/23

TX1 Watchdog

Enable watchdog to reboot got reboot hang sometimes.
https://forums.developer.nvidia.com/t/68319/20