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/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c
index 6145fa0..6e1779b 100644
--- a/drivers/gpu/drm/i915/intel_huc.c
+++ b/drivers/gpu/drm/i915/intel_huc.c
@@ -155,8 +155,8 @@ void intel_huc_select_fw(struct intel_huc *huc)
 	huc->fw.load_status = INTEL_UC_FIRMWARE_NONE;
 	huc->fw.type = INTEL_UC_FW_TYPE_HUC;
 
-	if (i915.huc_firmware_path) {
-		huc->fw.path = i915.huc_firmware_path;
+	if (i915_modparams.huc_firmware_path) {
+		huc->fw.path = i915_modparams.huc_firmware_path;
 		huc->fw.major_ver_wanted = 0;
 		huc->fw.minor_ver_wanted = 0;
 	} else if (IS_SKYLAKE(dev_priv)) {