Revert "drm/amd/display: navi10 bring up skip dsc encoder config"

Revert "drm/amd/display: navi10 bring up skip dsc encoder config"

This reverts commit 0639b81b789e3ca3043a122f0340dc7e237046be.

Re-enable enc2_dp_set_dsc_config. This function caused warnings
due to missing register definitions. With the registers added,
this now works

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>