MAINTAINERS: wcn36xx: Add linux-wireless list

The wcn36xx is a wireless device but doesn't have the wireless
list in its MAINTAINERS entry.
Add it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Acked-by: Jeff Johnson <jjohnson@kernel.org>
Link: https://patch.msgid.link/20251010235735.350638-1-linux@treblig.org


Signed-off-by: Johannes Berg <johannes.berg@intel.com>