[Description]
- For SubVP, we cannot support HW cursor if it's
  greater than 64 x 64 x 4 bytes in size
- However, on certain config changes (i.e. pixel format)
  we can exit SubVP (then change to HW cursor) then re-enter
  SubVP without changing back to SW cursor because there is
  no SetCursorAttributes call
- To workaround this issue, limit the HW cursor size to be
  less than 64 x 64 x 4 bytes whenever the stream is >= 4K
- Also ensure this W/A only affects DCN that supports SubVP
Reviewed-by: NJun Lei <Jun.Lei@amd.com>
Acked-by: NBrian Chang <Brian.Chang@amd.com>
Signed-off-by: NAlvin Lee <Alvin.Lee2@amd.com>
Tested-by: NDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>