trace: trace buffer may exceed 2GiB

Correct the debug output for the trace buffer size to accommodate trace
buffers exceeding 2GiB.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_f.c b/common/board_f.c
index 0fc938d..4760d72 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -442,8 +442,8 @@
 #ifdef CONFIG_TRACE
 	gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
 	gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
-	debug("Reserving %dk for trace data at: %08lx\n",
-	      CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
+	debug("Reserving %luk for trace data at: %08lx\n",
+	      (unsigned long)CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
 #endif
 
 	return 0;