drm/amd/display: misc for dio encoder refactor

[WHY]
These are left required changes for dio encoder refactor.

[HOW]
1. original logic is separated by config option
2. new link encoder dp enable/di

drm/amd/display: misc for dio encoder refactor

[WHY]
These are left required changes for dio encoder refactor.

[HOW]
1. original logic is separated by config option
2. new link encoder dp enable/disable code for dcn35
3. process fec only for DP 8b10b encoding

Reviewed-by: Cruise Hung <[email protected]>
Signed-off-by: Peichen Huang <[email protected]>
Signed-off-by: Wayne Lin <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

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drm/amd/display: replace dio encoder access

[WHY]
replace dio encoder access to work with new dio encoder
assignment.

[HOW}
1. before validation, access dio encoder by get_temp_dio_link_enc()
2. af

drm/amd/display: replace dio encoder access

[WHY]
replace dio encoder access to work with new dio encoder
assignment.

[HOW}
1. before validation, access dio encoder by get_temp_dio_link_enc()
2. after validation, access dio encoder through pipe_ctx->link_res

Reviewed-by: Wenjing Liu <[email protected]>
Reviewed-by: Meenakshikumar Somasundaram <[email protected]>
Signed-off-by: Peichen Huang <[email protected]>
Signed-off-by: Zaeem Mohamed <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

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