test: fdt: Fix copyright message

Drop the map_to_sysmem() copy paste error. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/test/cmd/fdt.c b/test/cmd/fdt.c
index 7835da2..1f103a1 100644
--- a/test/cmd/fdt.c
+++ b/test/cmd/fdt.c
@@ -2,7 +2,7 @@
 /*
  * Tests for fdt command
  *
- * Copyright 2022 Google LLCmap_to_sysmem(fdt));
+ * Copyright 2022 Google LLC
  */
 
 #include <common.h>