drm/i915: Rename global i915 to i915_modparams

Our global struct with params is named exactly the same way
as new preferred name for the drm_i915_private function parameter.
To avoid such name reuse lets use different name for the global.

v5: pure rename
v6: fix

Credits-to: Coccinelle

@@
identifier n;
@@
(
-	i915.n
+	i915_modparams.n
)

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Ville Syrjala <ville.syrjala@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170919193846.38060-1-michal.wajdeczko@intel.com
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 08e3ae1..d6babe7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -93,7 +93,7 @@
 #define I915_STATE_WARN(condition, format...) ({			\
 	int __ret_warn_on = !!(condition);				\
 	if (unlikely(__ret_warn_on))					\
-		if (!WARN(i915.verbose_state_checks, format))		\
+		if (!WARN(i915_modparams.verbose_state_checks, format))	\
 			DRM_ERROR(format);				\
 	unlikely(__ret_warn_on);					\
 })
@@ -3076,9 +3076,9 @@ intel_info(const struct drm_i915_private *dev_priv)
 
 #define HAS_LOGICAL_RING_CONTEXTS(dev_priv) \
 		((dev_priv)->info.has_logical_ring_contexts)
-#define USES_PPGTT(dev_priv)		(i915.enable_ppgtt)
-#define USES_FULL_PPGTT(dev_priv)	(i915.enable_ppgtt >= 2)
-#define USES_FULL_48BIT_PPGTT(dev_priv)	(i915.enable_ppgtt == 3)
+#define USES_PPGTT(dev_priv)		(i915_modparams.enable_ppgtt)
+#define USES_FULL_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt >= 2)
+#define USES_FULL_48BIT_PPGTT(dev_priv)	(i915_modparams.enable_ppgtt == 3)
 
 #define HAS_OVERLAY(dev_priv)		 ((dev_priv)->info.has_overlay)
 #define OVERLAY_NEEDS_PHYSICAL(dev_priv) \
@@ -3279,7 +3279,7 @@ static inline void i915_queue_hangcheck(struct drm_i915_private *dev_priv)
 {
 	unsigned long delay;
 
-	if (unlikely(!i915.enable_hangcheck))
+	if (unlikely(!i915_modparams.enable_hangcheck))
 		return;
 
 	/* Don't continually defer the hangcheck so that it is always run at