git-p4: fix filetype detection on files opened exclusively

git-p4: fix filetype detection on files opened exclusively

If a Perforce server is configured to automatically set +l
(exclusive lock) on add of certain file types, git p4 submit will
fail during getP4OpenedType, as the regex doesn't expect the
trailing '*exclusive*' from p4 opened:

  //depot/file.png#1 - add default change (binary+l) *exclusive*

Signed-off-by: Blair Holloway <redacted>
Acked-by: Luke Diamand <redacted>
Signed-off-by: Luke Diamand <redacted>
Signed-off-by: Junio C Hamano <redacted>