contrib/gitdm: Add RT-RK to the domain-map

This company has at least 7 contributors, add a domain-map entry.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190822231231.1306-1-philmd@redhat.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

contrib/gitdm/domain-map

@@ -18,6 +18,7 @@ nokia.com       Nokia
 oracle.com      Oracle
 proxmox.com     Proxmox
 redhat.com      Red Hat
+rt-rk.com       RT-RK
 siemens.com     Siemens
 sifive.com      SiFive
 suse.de         SUSE