drm/tegra: sor: Operate on struct drm_dp_aux *

Instead of getting a pointer to the driver-specific wrapper of AUX
channels, use the AUX channel objects directly to avoid hackish casting
between the two types.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index a972814..5bf696c 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -247,18 +247,17 @@
 void tegra_output_encoder_destroy(struct drm_encoder *encoder);
 
 /* from dpaux.c */
-struct tegra_dpaux;
 struct drm_dp_link;
 
-struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
-enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
-int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
-int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
-int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
-int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
-int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
-int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
-		      u8 pattern);
+struct drm_dp_aux *drm_dp_aux_find_by_of_node(struct device_node *np);
+enum drm_connector_status drm_dp_aux_detect(struct drm_dp_aux *aux);
+int drm_dp_aux_attach(struct drm_dp_aux *aux, struct tegra_output *output);
+int drm_dp_aux_detach(struct drm_dp_aux *aux);
+int drm_dp_aux_enable(struct drm_dp_aux *aux);
+int drm_dp_aux_disable(struct drm_dp_aux *aux);
+int drm_dp_aux_prepare(struct drm_dp_aux *aux, u8 encoding);
+int drm_dp_aux_train(struct drm_dp_aux *aux, struct drm_dp_link *link,
+		     u8 pattern);
 
 /* from fb.c */
 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,