neutrino: explicitly include vfd/lcd header

Instead of including it everywhere through global.h, just include
the lcd/vfd header where needed. Add a tiny helper header "display.h"
to divert between vfd.h (coolstream) and lcdd.h (everything else).

src/daemonc/remotecontrol.cpp

@@ -43,6 +43,7 @@
 
 #include <driver/record.h>
 #include <driver/abstime.h>
+#include <driver/display.h>
 #include <libdvbsub/dvbsub.h>
 #include <libtuxtxt/teletext.h>