mmc: sdhci-esdhc: update contact email

The 'pengutronix' address is defunct for years. Use the proper contact
address.
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20200502142840.19418-1-wsa@kernel.orgSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-esdhc.h

@@ -5,7 +5,7 @@
  * Copyright (c) 2007 Freescale Semiconductor, Inc.
  * Copyright (c) 2009 MontaVista Software, Inc.
  * Copyright (c) 2010 Pengutronix e.K.
- *   Author: Wolfram Sang <w.sang@pengutronix.de>
+ *   Author: Wolfram Sang <kernel@pengutronix.de>
  */
 
 #ifndef _DRIVERS_MMC_SDHCI_ESDHC_H

include/linux/platform_data/mmc-esdhc-imx.h

 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright 2010 Wolfram Sang <w.sang@pengutronix.de>
+ * Copyright 2010 Wolfram Sang <kernel@pengutronix.de>
  */
 
 #ifndef __ASM_ARCH_IMX_ESDHC_H