staging: most: core: fix date in file comment

This patch updates the date range in the comment section.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1579017478-3339-2-git-send-email-christian.gromm@microchip.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/most/core.c

@@ -2,7 +2,7 @@
 /*
  * core.c - Implementation of core module of MOST Linux driver stack
  *
- * Copyright (C) 2013-2015 Microchip Technology Germany II GmbH & Co. KG
+ * Copyright (C) 2013-2020 Microchip Technology Germany II GmbH & Co. KG
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt