drm/i915: Define IS_BROXTON properly.

Kabylake will also be defined as gen9 and !is_skylake.
So we need start by creating a proper Broxton
definition, otherwise we will break broxton with the
introduction of Kabylake.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1445966099-1640-2-git-send-email-rodrigo.vivi@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/i915_drv.c

@@ -383,6 +383,7 @@ static const struct intel_device_info intel_skylake_gt3_info = {
 
 static const struct intel_device_info intel_broxton_info = {
 	.is_preliminary = 1,
+	.is_broxton = 1,
 	.gen = 9,
 	.need_gfx_hws = 1, .has_hotplug = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,

drivers/gpu/drm/i915/i915_drv.h

@@ -765,6 +765,7 @@ struct intel_csr {
 	func(is_valleyview) sep \
 	func(is_haswell) sep \
 	func(is_skylake) sep \
+	func(is_broxton) sep \
 	func(is_preliminary) sep \
 	func(has_fbc) sep \
 	func(has_pipe_cxsr) sep \
@@ -2476,7 +2477,7 @@ struct drm_i915_cmd_table {
 #define IS_HASWELL(dev)	(INTEL_INFO(dev)->is_haswell)
 #define IS_BROADWELL(dev)	(!INTEL_INFO(dev)->is_valleyview && IS_GEN8(dev))
 #define IS_SKYLAKE(dev)	(INTEL_INFO(dev)->is_skylake)
-#define IS_BROXTON(dev)	(!INTEL_INFO(dev)->is_skylake && IS_GEN9(dev))
+#define IS_BROXTON(dev)		(INTEL_INFO(dev)->is_broxton)
 #define IS_MOBILE(dev)		(INTEL_INFO(dev)->is_mobile)
 #define IS_HSW_EARLY_SDV(dev)	(IS_HASWELL(dev) && \
 				 (INTEL_DEVID(dev) & 0xFF00) == 0x0C00)