Jetson/L4T/r32.7.x patches

bootloader [Cboot] Cboot in 32.7.2 fails to read extlinux.conf https://forums.developer.nvidia.com/t/cboot-in-32-7-2-fails-to-read-extlinux-conf/214017/15

Misc [USB] New version of USB firmware: 60.13 https://forums.developer.nvidia.com/t/216318/10

[Source sync] Missing "tegra194-p2888-0008-e3366-1199.dts" in source sync kernel https://forums.developer.nvidia.com/t/l4t-32-7-1-device-tree-compilation-fails/209374/8

Multimedia [ffmpeg] libavcodec.so: undefined reference to `v4l2_open’ https://forums.developer.nvidia.com/t/220546/9