drm/amd/display: add Asic ID for Dali

Dali is a new asic revision based on raven2

Add the ID and ASICREV_IS_DALI define

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>