radv: Support multiple devices.

Pretty straightforward. Also deleted the big comment block as it
is a pretty standard pattern for filling in arrays.

Also removed the error message on non-existent devices, as getting
7 errors printed to the console each time you enumerate the
devices is pretty confusing.

v2: Add constant for number of DRM devices.

Signed-off-by: Bas Nieuwenhuizen <basni@google.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
2 files changed