drm/amd/display: Restructure DMI quirks

drm/amd/display: Restructure DMI quirks

[Why]
DMI quirks are relatively big code that makes amdgpu_dm 200 lines
larger.

[How]
Move DMI quirks into a dedicated source file and make all quirks
variables for `struct amdgpu_display_manager`.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>