realtek: add support for ZyXEL GS1920-24HPv1 #34

Job	Run time
Build host tools for linux and macos based systems / Build tools with macos latest	1m 23s
Build host tools for linux and macos based systems / Check tools with buildbot container / Determine needed info to push containers	2s
Build host tools for linux and macos based systems / Check tools with buildbot container / Check tools	15m 52s
Build host tools for linux and macos based systems / Build tools with buildbot container / Build tools	1h 54m 35s
	2h 11m 52s

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