drm/arc: Use drm_gem_cma_print_info()

There is a new core debugfs file that prints fb/gem info:
<debugfs>/dri/<n>/framebuffer

Use drm_gem_cma_print_info() to provide info to that output instead
of using drm_fb_cma_debugfs_show().

Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171107191348.17555-9-noralf@tronnes.org

drivers/gpu/drm/arc/arcpgu_drv.c

@@ -155,7 +155,6 @@ static int arcpgu_show_pxlclock(struct seq_file *m, void *arg)
 
 static struct drm_info_list arcpgu_debugfs_list[] = {
 	{ "clocks", arcpgu_show_pxlclock, 0 },
-	{ "fb", drm_fb_cma_debugfs_show, 0 },
 };
 
 static int arcpgu_debugfs_init(struct drm_minor *minor)
@@ -180,6 +179,7 @@ static struct drm_driver arcpgu_drm_driver = {
 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_print_info = drm_gem_cma_print_info,
 	.gem_vm_ops = &drm_gem_cma_vm_ops,
 	.gem_prime_export = drm_gem_prime_export,
 	.gem_prime_import = drm_gem_prime_import,