drm/i915: Update missing parts after the rename to i915_request

Mostly doc/print messages that were not updated after commit e61e0f51
("drm/i915: Rename drm_i915_gem_request to i915_request").
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180222172405.11386-1-michel.thierry@intel.com

drivers/gpu/drm/i915/i915_gem_context.h

@@ -38,8 +38,8 @@ struct drm_file;
 
 struct drm_i915_private;
 struct drm_i915_file_private;
-struct drm_i915_gem_request;
 struct i915_hw_ppgtt;
+struct i915_request;
 struct i915_vma;
 struct intel_ring;
 

drivers/gpu/drm/i915/i915_request.c

@@ -1213,12 +1213,12 @@ static bool __i915_wait_request_check_and_reset(struct i915_request *request)
 }
 
 /**
- * i915_wait_request - wait until execution of request has finished
+ * i915_request_wait - wait until execution of request has finished
  * @rq: the request to wait upon
  * @flags: how to wait
  * @timeout: how long to wait in jiffies
  *
- * i915_wait_request() waits for the request to be completed, for a
+ * i915_request_wait() waits for the request to be completed, for a
  * maximum of @timeout jiffies (with MAX_SCHEDULE_TIMEOUT implying an
  * unbounded wait).
  *

drivers/gpu/drm/i915/selftests/intel_hangcheck.c

@@ -876,7 +876,7 @@ static int igt_wait_reset(void *arg)
 
 	timeout = i915_request_wait(rq, I915_WAIT_LOCKED, 10);
 	if (timeout < 0) {
-		pr_err("i915_wait_request failed on a stuck request: err=%ld\n",
+		pr_err("i915_request_wait failed on a stuck request: err=%ld\n",
 		       timeout);
 		err = timeout;
 		goto out_rq;