drm/panel-edp: Fix delays for INX N116BCN-EA1 (HW: C4)

This panel has the same delay timing as N116BCA-EA1. So, fix the
delay timing from delay_200_500_p2e80 to delay_200_500_e80_d50.

Fixes: 9f4a5714 ("drm/panel-edp: Add INX N116BCN-EA1")
Signed-off-by: Sean Hong <sean.hong@quanta.corp-partner.google.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220927021021.488295-1-sean.hong@quanta.corp-partner.google.com