sys/linux: add v4l2_meta_format #18518

Job	Run time
gvisor	4m 10s
race	7m 10s
build	3m 53s
old	7m 21s
aux	3m 42s
race_dashboard	2m 34s
dashboard	1m 58s
arch (presubmit_arch_windows)	3m 37s
arch (presubmit_arch_darwin)	3m 54s
arch (presubmit_arch_openbsd)	4m 1s
arch (presubmit_arch_netbsd)	3m 42s
arch (presubmit_arch_linux)	10m 50s
arch (presubmit_arch_freebsd)	6m 28s
arch (presubmit_arch_executor)	3m 24s
	1h 6m 44s

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