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/include/configs/nokia_rx51.h b/include/configs/nokia_rx51.h
index 5d1c7bf..16e77c6 100644
--- a/include/configs/nokia_rx51.h
+++ b/include/configs/nokia_rx51.h
@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2011-2012
- * Pali Rohár <pali.rohar@gmail.com>
+ * Pali Rohár <pali@kernel.org>
  *
  * (C) Copyright 2010
  * Alistair Buxton <a.j.buxton@gmail.com>