[display] show REC Symbol settings only if display skin exists

cherry-pick > openatv/enigma2@5d47961

data/setup.xml

@@ -487,8 +487,10 @@
 		<item level="1" requires="LCDMiniTV" text="Show PIP in the front panel display" description="You can display PIP with or without OSD menu">config.lcd.modepip</item>
 		<item level="1" requires="LCDMiniTV" text="Set framerate for MiniTV" description="Lower framerate save CPU time">config.lcd.fpsminitv</item>
 		<item level="2" requires="LCDMiniTV" text="Screenshot of LCD in /tmp" description="Enable screenshot of LCD in /tmp">config.lcd.screenshot</item>
-		<item level="1" text="REC symbol in use" description="Enable blinking REC symbol on the LCD display">config.usage.blinking_rec_symbol_during_recording</item>
-		<item level="1" text="REC symbol in Standby" description="In the Standby record on the LCD display">config.usage.blinking_display_clock_during_recording</item>
+		<if requires="LCDSKIN">
+			<item level="1" text="REC Symbol in use" description="Enable blinking rec symbol on the LCD Display.">config.usage.blinking_rec_symbol_during_recording</item>
+			<item level="1" text="REC Symbol in Standby" description="Enable blinking rec symbol on the LCD Display in Standby.">config.usage.blinking_display_clock_during_recording</item>
+		</if>
 		<item level="1" requires="ConfigDisplay" text="Scrolling speed (software renderer)" description="Set the scrolling speed of text on the front panel display, this is used by software renderer in some skins.">config.lcd.scroll_speed</item>
 		<item level="1" requires="ConfigDisplay" text="Scrolling delay (software renderer)" description="Set the delay time between repeated loops, this is used by software renderer in some skins.">config.lcd.scroll_delay</item>
 		<item level="0" requires="ConfigDisplay" text="Power On Display" description="This option allows you to Power Off the display.">config.lcd.power</item>

lib/python/Components/SystemInfo.py

@@ -313,6 +313,7 @@ def getBoxName():
 BoxInfo.setItem("LcdLiveTVMode", fileCheck("/proc/stb/lcd/mode"))
 BoxInfo.setItem("LcdLiveDecoder", fileCheck("/proc/stb/lcd/live_decoder"))
 BoxInfo.setItem("LCDMiniTV", fileExists("/proc/stb/lcd/mode"))
+BoxInfo.setItem("LCDSKIN", fileExists("/usr/share/enigma2/display"))
 BoxInfo.setItem("ConfigDisplay", BoxInfo.getItem("FrontpanelDisplay"))
 BoxInfo.setItem("DefaultDisplayBrightness", MACHINEBUILD in ("dm900", "dm920", "dreamone", "dreamtwo") and 8 or 5)
 BoxInfo.setItem("3DMode", fileCheck("/proc/stb/fb/3dmode") or fileCheck("/proc/stb/fb/primary/3d"))