nvidiafb: detect the hardware support before removing console.

This driver removed the console, but hasn't yet decided if it could
take over the console yet. Instead of doing that, probe the hw for
support and then remove the console afterwards.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216859
Fixes: 145eed48

 ("fbdev: Remove conflicting devices on PCI bus")
Reported-by: Zeno Davatz <zdavatz@gmail.com>
Tested-by: Zeno Davatz <zdavatz@gmail.com>
Tested-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230205210751.3842103-1-airlied@gmail.com