drm/edid: Restore kerneldoc consistency

Commit 18df89fe ("drm: Decouple EDID parsing from I2C adapter")
renamed the adapter parameter of the drm_do_probe_ddc_edid function
to data but didn't update the kerneldoc accordingly.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>