rockchip: video: vop: Fix format of fbbase in debug string

The debug string printing the device name, framebuffer address and of node
is using %lu as format for the framebuffer address, which is not so nice.
Change it to %lx.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
diff --git a/drivers/video/rockchip/rk_vop.c b/drivers/video/rockchip/rk_vop.c
index 3eb5e8c..030fc5e 100644
--- a/drivers/video/rockchip/rk_vop.c
+++ b/drivers/video/rockchip/rk_vop.c
@@ -240,7 +240,7 @@
 	ofnode remote;
 	const char *compat;
 
-	debug("%s(%s, %lu, %s)\n", __func__,
+	debug("%s(%s, 0x%lx, %s)\n", __func__,
 	      dev_read_name(dev), fbbase, ofnode_get_name(ep_node));
 
 	ret = ofnode_read_u32(ep_node, "remote-endpoint", &remote_phandle);