ucsi: ucsi_glink: add more flags for clients during notification

Add partner_change and connect flags when notifying clients
about the partner information.This would be useful for some clients to
modify their state/configuration.

Change-Id: I85b601b7ea60dda2ac630c51a499767f5fb70351
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>