drm/i915/fdinfo: Enable fdinfo for GuC backends

Enable fdinfo for GuC based platforms with the exception that long
running contexts will not provide reliable busyness data unless they
switch out at some reasonable point in time.

Link: https://gitlab.freedesktop.org/drm/intel/issues/8303


Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230427224705.2785566-3-umesh.nerlige.ramappa@intel.com