Nokia RX-51: Update my email address

I'm using a new email address, so reflect this state also in U-Boot.

Signed-off-by: Pali Rohár <pali@kernel.org>
diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c
index f156288..6af0617 100644
--- a/cmd/bootmenu.c
+++ b/cmd/bootmenu.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * (C) Copyright 2011-2013 Pali Rohár <pali.rohar@gmail.com>
+ * (C) Copyright 2011-2013 Pali Rohár <pali@kernel.org>
  */
 
 #include <common.h>