gpio: exar: add a newline after the copyright notice

It's customary to have a newline between the copyright header and the
includes. Add one to gpio-exar.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/gpio/gpio-exar.c

@@ -4,6 +4,7 @@
  *
  * Copyright (C) 2015 Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
  */
+
 #include <linux/bitops.h>
 #include <linux/device.h>
 #include <linux/gpio/driver.h>