drm: xlnx: zynqmp_dpsub: Fix kernel doc
Fix two kernel doc warnings introduced by the recent DP audio patch:
- Add a doc line for the new "audio" field
- Remove a reference to zynqmp_dpsub.c from zynqmp.rst, as the .c file
no longer has structured comments
Fixes:
3ec5c1579305 ("drm: xlnx: zynqmp_dpsub: Add DP audio support")
Closes: https://lore.kernel.org/all/
20241220154208.
720d990b@canb.auug.org.au/
Reviewed-by: Vishal Sagar <vishal.sagar@amd.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241220-xilinx-dp-audio-doc-fix-v1-1-cc488996e463@ideasonboard.com