drm/amd/display: Correct display clocks update block sequence

[WHY&HOW]
At the time of block sequence construction, the exact reference DPP/DISP clock is
not yet known, so the clock should be passed by reference to the DTO programming
function.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>