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
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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