[why]
 the dcn301_calculate_wm_and_dl() calculation exposed a issue
 - switch to dcn30 version for now.
 still need to follow up with dcn301 watermark updates version.

v2: squash in warning fix
Signed-off-by: NCharles Sun <charles.sun@amd.com>
Reviewed-by: NNikola Cornij <nikola.cornij@amd.com>
Acked-by: NCharles Sun <charles.sun@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>