drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER

drm/panel: s6e3ha8: fix unmet dependency on DRM_DISPLAY_HELPER

Currently, DRM_PANEL_SAMSUNG_S6E3HA8 selects DRM_DISPLAY_DSC_HELPER
without ensuring its dependency, DRM_DISPLAY_HELPER, is enabled,
causing an unmet dependency.

Let's select DRM_DISPLAY_HELPER as other similar options do.

This unmet dependency bug was found by kconfirm, a static analysis tool
for Kconfig.

Fixes: fd3b2c5f40a1 ("drm/panel: s6e3ha8: select CONFIG_DRM_DISPLAY_DSC_HELPER")
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260712001514.2318597-1-julianbraha@gmail.com