treewide: Update email address Patrick Delaunay and Patrice Chotard

Update Patrick and my email address with the one dedicated to
upstream activities.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/drivers/serial/serial_sti_asc.c b/drivers/serial/serial_sti_asc.c
index 33ff396..91e1574 100644
--- a/drivers/serial/serial_sti_asc.c
+++ b/drivers/serial/serial_sti_asc.c
@@ -3,7 +3,7 @@
  * Support for Serial I/O using STMicroelectronics' on-chip ASC.
  *
  * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
- * Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
+ * Author(s): Patrice Chotard, <patrice.chotard@foss.st.com> for STMicroelectronics.
  */
 
 #include <common.h>