drm/i915/dp_link_caps: Add link configuration iterator

Add helpers to iterate over the allowed and optionally filtered set of
link configurations in a given order.

Taking into account disabled configurations will be added later when
adding support for disabling configurations.

Use the BW order in descending direction by default.

v2:
- Keep the iteration state in an iteration object. (Jani)
- Use a filter object instead of exposing configuration indices. (Jani)
- Move changes adding helpers required to setup the iteration object to
  this patch.

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patch.msgid.link/20260701153204.4124150-5-imre.deak@intel.com

0 files changed, 0 insertions, 0 deletions