Revert "driver core: Export device_is_dependent() to modules"

This reverts commit 1d5e8f4b.

Greg says: "why exactly is this needed?  Nothing outside of
the driver core should be needing this function, it shouldn't
be public at all (I missed that before.)

So please, revert it for now, let's figure out why DRM thinks
this is needed for it's devices, and yet no other bus/subsystem
does."

Link: https://lore.kernel.org/dri-devel/2023112739-willing-sighing-6bdd@gregkh/


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20231128-revert-panel-fix-v1-1-69bb05048dae@linaro.org


Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231128-revert-panel-fix-v1-1-69bb05048dae@linaro.org