kmsro: Extend to include ingenic-drm

kmsro: Extend to include ingenic-drm

This enables Mesa to work with Ingenic SoCs through the use of the
ingenic-drm modesetting driver along with the render-only drivers,
such as Etnaviv on the JZ4770 SoC.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>