drm/amd/display: Fix spelling mistake "tunndeling" -> "tunneling"

There is a spelling mistake in a dm_error message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c

@@ -1637,7 +1637,7 @@ static bool retrieve_link_cap(struct dc_link *link)
 	/* Read DP tunneling information. */
 	status = dpcd_get_tunneling_device_data(link);
 	if (status != DC_OK)
-		dm_error("%s: Read tunndeling device data failed.\n", __func__);
+		dm_error("%s: Read tunneling device data failed.\n", __func__);
 
 	dpcd_set_source_specific_data(link);
 	/* Sink may need to configure internals based on vendor, so allow some