package/connman: set CONNMAN_CPE_ID_VENDOR

cpe:2.3:a:intel:connman is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/detail/702658?namingFormat=2.3&orderBy=CPEURI&keyword=connman&status=FINAL



Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>