Change e-mail address of Kamil Lulko

Signed-off-by: Kamil Lulko <kamil.lulko@gmail.com>
diff --git a/arch/arm/cpu/armv7m/stm32f4/timer.c b/arch/arm/cpu/armv7m/stm32f4/timer.c
index 102ae6d..1dee190 100644
--- a/arch/arm/cpu/armv7m/stm32f4/timer.c
+++ b/arch/arm/cpu/armv7m/stm32f4/timer.c
@@ -1,6 +1,6 @@
 /*
  * (C) Copyright 2015
- * Kamil Lulko, <rev13@wp.pl>
+ * Kamil Lulko, <kamil.lulko@gmail.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */