drm/i915/adl_p: Allow underrun recovery when possible
ADL_P requires that we disable underrun recovery when downscaling (or using the scaler for YUV420 pipe output), using DSC, or using PSR2. Otherwise we should be able to enable the underrun recovery. On DG2 we need to keep underrun recovery disabled at all times, but the chicken bit in PIPE_CHICKEN has an inverted meaning (it's an enable bit instead of disable). v2: - Reverse the condition (clear the disable bit when supported, set disable bit when not supported). Bspec: 50351 Signed-off-by: NMatt Roper <matthew.d.roper@intel.com> Reviewed-by: NStanislav Lisovskiy <stanislav.lisovskiy@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210727145056.2049720-1-matthew.d.roper@intel.com
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