drm/amd/display: Drop DCN for DP2.x logic

[Why & How]
DCN guard is not necessary for DP2.x relevant logic.
Drop them.

v2: squash in fix for misplaced #endif (Alex)

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Reviewed-by: Jerry Zuo <Jerry.Zuo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amd/display: Add DP 2.0 HPO Stream Encoder

HW Blocks:

+--------+ +-----+ +------+
| OPTC | | HDA | | HUBP |
+--------+ +-----+ +------+
| | |
| | |
HPO ====|==========|========|====
| | v |
| | +-----+ |
| | | APG | |
| | +-----+ |
| | | |
v v v v
+----------------------+
| HPO Stream Encoder |
+----------------------+

[squash in warning fixes - Alex]

Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amd/display: get board layout for edid emulation

Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amd/dc: Add dc display driver (v2)

Supported DCE versions: 8.0, 10.0, 11.0, 11.2

v2: rebase against 4.11

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>