drm/i915: Fix has_audio readout for DDI A
Transcoder EDP does not support audio. Let's not try to read the state of the audio enable bit HSW_AUD_PIN_ELD_CP_VLD based on the pipe when using transcoder EDP. While at it make the function static and flatten it. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171129164303.18793-3-ville.syrjala@linux.intel.com Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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