host/l2cap: disconnect if received packet is larger than MPS
host/l2cap: disconnect if received packet is larger than MPS

Peer sending packet larger than MPS is invalid, and should be met
with L2CAP channel disconnection.

This affects L2CAP/LE/CFC/BV-27-C

apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble,apache/mynewt-nimble