Add supervision timeout workaround for Nexus Remote

The Nexus Remote would report 100ms supervision timeout in its preferred
connection parameters. In some noisy environments, this might cause
connection to be dropped. As a workaround, set the timeout to 3s for the
remote.

Test: manual
Bug: 36645397
Bug: 37717216
Change-Id: I665a854e9d55067ec1aca273c31d06c6114c48be