drm/i915: Make IS_SKYLAKE only take dev_priv

Saves 1016 bytes of .rodata strings and couple hundred of .text.

v2: Add parantheses around dev_priv. (Ville Syrjala)

Signed-off-by: Tvrtko Ursulin <[e-mail]>
Reviewed-by: David Weinehall <[e-mail]>
Acked-by: Daniel Vetter <[e-mail]>
Acked-by: Jani Nikula <[e-mail]>
Acked-by: Chris Wilson <[e-mail]>
Acked-by: Maarten Lankhorst <[e-mail]>

drivers/gpu/drm/i915/i915_drv.h

···
 #define IS_CHERRYVIEW(dev)	(INTEL_INFO(dev)->is_cherryview)
 #define IS_HASWELL(dev_priv)	((dev_priv)->info.is_haswell)
 #define IS_BROADWELL(dev_priv)	((dev_priv)->info.is_broadwell)
-#define IS_SKYLAKE(dev)	(INTEL_INFO(dev)->is_skylake)
+#define IS_SKYLAKE(dev_priv)	((dev_priv)->info.is_skylake)
 #define IS_BROXTON(dev)		(INTEL_INFO(dev)->is_broxton)
 #define IS_KABYLAKE(dev_priv)	((dev_priv)->info.is_kabylake)
 #define IS_MOBILE(dev)		(INTEL_INFO(dev)->is_mobile)

drivers/gpu/drm/i915/i915_gem_gtt.c

···
 		I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_BDW);
 	else if (IS_CHERRYVIEW(dev))
 		I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN8_L3_LRA_1_GPGPU_DEFAULT_VALUE_CHV);
-	else if (IS_SKYLAKE(dev))
+	else if (IS_SKYLAKE(dev_priv))
 		I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_SKL);
 	else if (IS_BROXTON(dev))
 		I915_WRITE(GEN8_L3_LRA_1_GPGPU, GEN9_L3_LRA_1_GPGPU_DEFAULT_VALUE_BXT);

drivers/gpu/drm/i915/intel_guc_loader.c

···
 
 	if (!HAS_GUC_UCODE(dev)) {
 		fw_path = NULL;
-	} else if (IS_SKYLAKE(dev)) {
+	} else if (IS_SKYLAKE(dev_priv)) {
 		fw_path = I915_SKL_GUC_UCODE;
 		guc_fw->guc_fw_major_wanted = SKL_FW_MAJOR;
 		guc_fw->guc_fw_minor_wanted = SKL_FW_MINOR;