drm/i915/display: include gt/intel_gt_types.h where needed

Include what you use. We need to move the compat intel_gt_types.h under
gt subdir. With this, we can drop the include from xe compat i915_drv.h.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/df73c0934ad21f157714a41b33b81cebd2a523a6.1717004739.git.jani.nikula@intel.com