owners: omit net/qrtr from networking

net/qrtr is a Qualcomm hw internal protocol (used by their wireless and other NICs) and as such does not belong to networking.

On Íñigo's request, make a separate entry for qrtr with the same maintainer and reviewers as wireless.

Cc: Íñigo Huguet ihuguet@redhat.com Signed-off-by: Jiri Benc jbenc@redhat.com