drivers/net/gianfar_sysfs.c: update email address of Kumar Gala

drivers/net/gianfar_sysfs.c still contained the old email address
of Kumar Gala.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

drivers/net/gianfar_sysfs.c

@@ -7,7 +7,7 @@
  * Based on 8260_io/fcc_enet.c
  *
  * Author: Andy Fleming
- * Maintainer: Kumar Gala (kumar.gala@freescale.com)
+ * Maintainer: Kumar Gala (galak@kernel.crashing.org)
  *
  * Copyright (c) 2002-2005 Freescale Semiconductor, Inc.
  *