Documentation/gpu: Introduce a simple contribution list for display code

Documentation/gpu: Introduce a simple contribution list for display code

This commit adds a contribution list for display under the kernel
documentation with some first suggestions. It also drops an old TODO
list from the display folder.

Cc: Mario Limonciello <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: Harry Wentland <[email protected]>
Cc: Hamza Mahfooz <[email protected]>
Cc: Christian König <[email protected]>
Cc: Aurabindo Pillai <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Acked-by: Christian König <[email protected]>
Acked-by: Hamza Mahfooz <[email protected]>
Signed-off-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>