Revert "drm/i915: replace select with dependency for visible DEBUG_OBJECTS"

Revert "drm/i915: replace select with dependency for visible DEBUG_OBJECTS"

This reverts commit 025f89b01ed8d5e65d87ed54f231e10c6ac08188.

025f89b01ed8 ("drm/i915: replace select with dependency for visible
DEBUG_OBJECTS") breaks the build in certain scenarios, presumably
because config DRM_I915_DEBUG selects DRM_I915_SW_FENCE_DEBUG_OBJECTS
without looking at its dependencies, allowing
DRM_I915_SW_FENCE_DEBUG_OBJECTS=y and DEBUG_OBJECTS=n.

Fixes: 025f89b01ed8 ("drm/i915: replace select with dependency for visible DEBUG_OBJECTS")
Cc: Julian Braha <julianbraha@gmail.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://patch.msgid.link/20260506101957.202271-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>