Initial rockbox.desktop file for Linux DE's

Need to manually copy to /usr/share/applications/ and move a
icon into /usr/share/icons to work.

Change-Id: I4ad900fec8c89bd4352ba908ba8e36f94e02ae5a
diff --git a/rockbox.desktop b/rockbox.desktop
new file mode 100644
index 0000000..bc6cc85
--- /dev/null
+++ b/rockbox.desktop
@@ -0,0 +1,12 @@
+[Desktop Entry]
+Name=Rockbox
+GenericName=Music Player
+X-GNOME-FullName=Rocbox Music Player
+Comment=The Rockbox Custom Jukebox Firmware on your Desktop
+Exec=rockbox
+Icon=rockbox
+Terminal=false
+Type=Application
+Categories=AudioVideo;
+StartupNotify=true
+X-Ubuntu-Gettext-Domain=rockbox