drm: Remove now pointelss blob->data casts

Now that blob->data is void* again we don't need the casts anymore.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180223192506.29992-2-ville.syrjala@linux.intel.com
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/drm_atomic.c

@@ -391,8 +391,7 @@ int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
 	if (blob) {
 		if (blob->length != sizeof(struct drm_mode_modeinfo) ||
 		    drm_mode_convert_umode(state->crtc->dev, &state->mode,
-		                           (const struct drm_mode_modeinfo *)
-		                            blob->data))
+					   blob->data))
 			return -EINVAL;
 
 		state->mode_blob = drm_property_blob_get(blob);

drivers/gpu/drm/drm_atomic_helper.c

@@ -3818,7 +3818,7 @@ int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
 	}
 
 	/* Prepare GAMMA_LUT with the legacy values. */
-	blob_data = (struct drm_color_lut *) blob->data;
+	blob_data = blob->data;
 	for (i = 0; i < size; i++) {
 		blob_data[i].red = red[i];
 		blob_data[i].green = green[i];

drivers/gpu/drm/drm_edid.c

@@ -1554,8 +1554,7 @@ struct edid *drm_do_get_edid(struct drm_connector *connector,
 	struct edid *override = NULL;
 
 	if (connector->override_edid)
-		override = drm_edid_duplicate((const struct edid *)
-					      connector->edid_blob_ptr->data);
+		override = drm_edid_duplicate(connector->edid_blob_ptr->data);
 
 	if (!override)
 		override = drm_load_edid_firmware(connector);

drivers/gpu/drm/drm_fb_helper.c

@@ -1351,7 +1351,7 @@ static struct drm_property_blob *setcmap_new_gamma_lut(struct drm_crtc *crtc,
 	if (IS_ERR(gamma_lut))
 		return gamma_lut;
 
-	lut = (struct drm_color_lut *)gamma_lut->data;
+	lut = gamma_lut->data;
 	if (cmap->start || cmap->len != size) {
 		u16 *r = crtc->gamma_store;
 		u16 *g = r + crtc->gamma_size;

drivers/gpu/drm/drm_plane.c

@@ -104,7 +104,7 @@ static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane
 	if (IS_ERR(blob))
 		return -1;
 
-	blob_data = (struct drm_format_modifier_blob *)blob->data;
+	blob_data = blob->data;
 	blob_data->version = FORMAT_BLOB_CURRENT;
 	blob_data->count_formats = plane->format_count;
 	blob_data->formats_offset = sizeof(struct drm_format_modifier_blob);