drm/amd/display: Always pass connector_state to stream validation

drm/amd/display: Always pass connector_state to stream validation

We need the connector_state for colorspace and scaling information
and can get it from connector->state.

Signed-off-by: Harry Wentland <[email protected]>
Reviewed-by: Joshua Ashton <[email protected]>
Cc: Pekka Paalanen <[email protected]>
Cc: Sebastian Wick <[email protected]>
Cc: [email protected]
Cc: Joshua Ashton <[email protected]>
Cc: Simon Ser <[email protected]>
Cc: Melissa Wen <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Alex Deucher <[email protected]>