multi: update to tlv/v1.1.0 and use new *P2P tlv decoding variants

This changes the call-sites in several places to use the *P2P variants
to not trigger an OOM on untrusted input. This makes the code safe with
the new tlv version. Note that the call-sites prior to this change were
also safe.

go.mod

@@ -38,7 +38,7 @@ require (
 	github.com/lightningnetwork/lnd/kvdb v1.3.1
 	github.com/lightningnetwork/lnd/queue v1.1.0
 	github.com/lightningnetwork/lnd/ticker v1.1.0
-	github.com/lightningnetwork/lnd/tlv v1.0.3
+	github.com/lightningnetwork/lnd/tlv v1.1.0
 	github.com/lightningnetwork/lnd/tor v1.1.0
 	github.com/ltcsuite/ltcd v0.0.0-20190101042124-f37f8bf35796
 	github.com/miekg/dns v1.1.43