simple_display: add possibility to show text when changing mode

Origin commit data
------------------
Commit: 42e172a8b3
Author: vanhofen <vanhofen@gmx.de>
Date: 2017-11-13 (Mon, 13 Nov 2017)

Origin message was:
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- simple_display: add possibility to show text when changing mode

src/driver/simple_display.cpp

@@ -470,8 +470,11 @@ void CLCD::showAudioProgress(const char, bool)
 {
 }
 
-void CLCD::setMode(const MODES m, const char * const)
+void CLCD::setMode(const MODES m, const char * const title)
 {
+	if (strlen(title))
+		ShowText(title);
+
 	mode = m;
 
 	setlcdparameter();