kernel-balena: Include NFS V2, V3 and V4 client and server modules

[acostach]

As per internal discussion thread
https://balena.zulipchat.com/#narrow/stream/345882-_help/topic/.E2.9C.94.20nfs.20.283.20or.204.29.20on.20jetson.20nano/near/342072698

Change-type: patch

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