drm/qxl: Replace drm_gem_object_reference/unreference() with _get/put()

Replace drm_gem_object_reference/unreference function with *_get/put()
suffixes, because it is shorter and consistent with the kernel
kref_get/put() functions. The following Coccinelle script was used:

@@
expression e;
@@

(
-drm_gem_object_reference(e);
+drm_gem_object_get(e);
|
-drm_gem_object_unreference(e);
+drm_gem_object_put(e);
|
-drm_gem_object_unreference_unlocked(e);
+drm_gem_object_put_unlocked(e);
)

Signed-off-by: Santha Meena Ramamoorthy <santhameena13@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1521570567-22519-1-git-send-email-santhameena13@gmail.com
diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 9a9214a..ecb35ed 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -309,7 +309,7 @@ void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb)
 	struct qxl_bo *bo = gem_to_qxl_bo(qxl_fb->obj);
 
 	WARN_ON(bo->shadow);
-	drm_gem_object_unreference_unlocked(qxl_fb->obj);
+	drm_gem_object_put_unlocked(qxl_fb->obj);
 	drm_framebuffer_cleanup(fb);
 	kfree(qxl_fb);
 }
@@ -1215,7 +1215,7 @@ qxl_user_framebuffer_create(struct drm_device *dev,
 	ret = qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj, &qxl_fb_funcs);
 	if (ret) {
 		kfree(qxl_fb);
-		drm_gem_object_unreference_unlocked(obj);
+		drm_gem_object_put_unlocked(obj);
 		return NULL;
 	}