drm/i915/bxt: Broxton uses the same GMS values as Skylake

v2: Rebase on top of the early-quirks rework from Ville.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Reviewed-by: NSivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

arch/x86/kernel/early-quirks.c

@@ -546,6 +546,7 @@ static const struct pci_device_id intel_stolen_ids[] __initconst = {
 	INTEL_BDW_D_IDS(&gen8_stolen_funcs),
 	INTEL_CHV_IDS(&chv_stolen_funcs),
 	INTEL_SKL_IDS(&gen9_stolen_funcs),
+	INTEL_BXT_IDS(&gen9_stolen_funcs),
 };
 
 static void __init intel_graphics_stolen(int num, int slot, int func)