Media decompression support should not be advertised on any display
planes for steppings A0-C0.

Bspec: 53273
Fixes: 2dfbf9d2 ("drm/i915/tgl: Gen-12 display can decompress surfaces compressed by the media engine")
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200414211118.2787489-3-matthew.d.roper@intel.comReviewed-by: José Roberto de Souza <jose.souza@intel.com>
(cherry picked from commit dbff5a8d)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>