drivers: i3c: fix adv_info_get ret code

It's possible if a device is an i3c v1.0 spec, no hdr, no mxds,
no controller caps, and does not have a mrl nor mwl. It should
return 0 if it doesn't need to do anything.

Signed-off-by: Ryan McClelland <ryanmcclelland@meta.com>