SerialTerminal: Modernize

modernize-*

Change-Id: If7b19d7c560ecda5f6e519d88b7eab46d4eabccf
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/serialterminal/serialterminalconstants.h

@@ -25,6 +25,8 @@
 
 #pragma once
 
+#include <QtGlobal>
+
 namespace SerialTerminal {
 namespace Constants {