Revert "egl: Don't add hardware device if there is no render node v2."
This reverts commit 5743a36b. Now that _eglAddDevice is always called with the correct software hint, no need to bail out if the device doesn't have a render node. On split render/display SoCs, the DRM device won't have a render node, yet rendering is hardware-accelerated (via kmsro). Signed-off-by:Simon Ser <contact@emersion.fr> Fixes: 5743a36b ("egl: Don't add hardware device if there is no render node v2.") Closes: #4178 Part-of: <!9697>