ac6887af7a4e drm/i915/display: move display funcs under modeset sub-struct
8125ee293f61 drm/i915/display: move cdclk funcs under cdclk sub-struct
c9249637b717 drm/i915/display: move dpll funcs under dpll sub-struct
ac7ab9cc17e6 drm/i915/display: move hotplug irq funcs under hotplug sub-struct
5d8466c63731 drm/i915/display: move watermark funcs under wm sub-struct
b7787db51055 drm/i915/display: move fdi funcs under fdi sub-struct
8425fdc06b75 drm/i915/display: move color funcs under color sub-struct
9d98d5142f11 drm/i915/display: move audio funcs under audio sub-struct