cmd/geth: rename --whitelist to --eth.requiredblocks (#24505)

* cmd, eth: Rename whitelist argument to peer.requiredblocks

* eth/ethconfig: document PeerRequiredBlocks better

* cmd/utils: rename new flag to --eth.requiredblocks

Co-authored-by: Felix Lange <fjl@twurst.com>

eth/backend.go

@@ -220,16 +220,16 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 		checkpoint = params.TrustedCheckpoints[genesisHash]
 	}
 	if eth.handler, err = newHandler(&handlerConfig{
-		Database:   chainDb,
-		Chain:      eth.blockchain,
-		TxPool:     eth.txPool,
-		Merger:     merger,
-		Network:    config.NetworkId,
-		Sync:       config.SyncMode,
-		BloomCache: uint64(cacheLimit),
-		EventMux:   eth.eventMux,
-		Checkpoint: checkpoint,
-		Whitelist:  config.Whitelist,
+		Database:           chainDb,
+		Chain:              eth.blockchain,
+		TxPool:             eth.txPool,
+		Merger:             merger,
+		Network:            config.NetworkId,
+		Sync:               config.SyncMode,
+		BloomCache:         uint64(cacheLimit),
+		EventMux:           eth.eventMux,
+		Checkpoint:         checkpoint,
+		PeerRequiredBlocks: config.PeerRequiredBlocks,
 	}); err != nil {
 		return nil, err
 	}