lcd4l: use better readable enumeration to handle g_settings.lcd4l_display_type

Origin commit data
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Commit: 3598a95c3d
Author: vanhofen <vanhofen@gmx.de>
Date: 2018-09-10 (Mon, 10 Sep 2018)

Origin message was:
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- lcd4l: use better readable enumeration to handle g_settings.lcd4l_display_type

src/driver/lcd4l.h

@@ -38,6 +38,13 @@ class CLCD4l
 		CLCD4l();
 		~CLCD4l();
 
+		// Displays
+		enum
+		{
+			PEARL		= 0,
+			SAMSUNG 	= 1
+		};
+
 		// Functions
 		void	InitLCD4l();
 		void	StartLCD4l();