phosh: Use drm backend by default
This helps wlroots 0.10.0 under GDM since it otherwise prefers wayland due to the set socket.
We allow overriding the backend for testing.
Signed-off-by: Guido Günther guido.gunther@puri.sm
This helps wlroots 0.10.0 under GDM since it otherwise prefers wayland due to the set socket.
We allow overriding the backend for testing.
Signed-off-by: Guido Günther guido.gunther@puri.sm