owners.yaml: Fix duplicate ntb label names
Non-Transparent Bridge, and PCI-E Non-Transparent Bridge support both had
the same label name 'ntb'.
Change PCI-E Non-Transparent Bridge to 'pcintb' and fix the label name
collision.
Signed-off-by: Prarit Bhargava prarit@redhat.com
Edited by Prarit Bhargava