[PATCH] drm/i915: Fix enc_to_dig_port() for MST encoders

For MST encoders, the encoder struct is stored in the intel_dp_mst struct, not a intel_digital_port struct. This fixes issues with hotplugging MST displays that support MST audio, where hotplugging had a surprisingly good chance of accidentally overwriting other parts of the kernel leading to

[PATCH] drm/i915: Fix enc_to_dig_port() for MST encoders

For MST encoders, the encoder struct is stored in the intel_dp_mst struct, not a intel_digital_port struct. This fixes issues with hotplugging MST displays that support MST audio, where hotplugging had a surprisingly good chance of accidentally overwriting other parts of the kernel leading to