drm/bridge: ti-tfp410: Update drm_connector_init_with_ddc() error message

The code was changed to call drm_connector_init_with_ddc() instead of
drm_connector_init(), but the corresponding error message was not
updated.

Fixes: cfb44455

 ("drm/bridge: ti-tfp410: Provide ddc symlink in connector sysfs directory")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200115125653.5519-1-geert+renesas@glider.be