drm/hisilicon: Use drm_err instead of DRM_ERROR in hibmc_ttm

Use drm_err instead of DRM_ERROR in hibmc_ttm.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1597829014-39942-2-git-send-email-tiantao6@hisilicon.com

drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c

@@ -32,7 +32,7 @@ int hibmc_mm_init(struct hibmc_drm_private *hibmc)
 				       hibmc->fb_size);
 	if (IS_ERR(vmm)) {
 		ret = PTR_ERR(vmm);
-		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
+		drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
 		return ret;
 	}