More displayPort_t, CANVAS as new feature, multi-display cycling

- Further touch-ups with displayPort_t handling.
- CANVAS is a FEATURE now.
- Device specific xxxCmsInit() are registered by device’s init, and
called by CMS upon entry to menu.
- Multiple display devices can be cycled by entering menu invocation
command while in menu.
- The menu invocation command is (was) changed to THR-Mid + YAW-Left +
Pitch-Full to avoid collision with MWOSD menu invocation command.
- More separation attempt.

src/main/main.c

@@ -91,6 +91,7 @@
 #include "io/cms.h"
 #include "io/osd.h"
 #include "io/vtx.h"
+#include "io/canvas.h"
 
 #include "scheduler/scheduler.h"
 
@@ -398,6 +399,10 @@ void init(void)
 
     initBoardAlignment(&masterConfig.boardAlignment);
 
+#ifdef CMS
+    cmsInit();
+#endif
+
 #ifdef DISPLAY
     if (feature(FEATURE_DISPLAY)) {
         displayInit(&masterConfig.rxConfig);
@@ -419,10 +424,6 @@ void init(void)
     }
 #endif
 
-#ifdef CMS
-    cmsInit();
-#endif
-
     if (!sensorsAutodetect(&masterConfig.sensorAlignmentConfig,
             masterConfig.acc_hardware,
             masterConfig.mag_hardware,
@@ -461,6 +462,12 @@ void init(void)
     mspFcInit();
     mspSerialInit();
 
+#ifdef CANVAS
+    if (feature(FEATURE_CANVAS)) {
+        canvasInit();
+    }
+#endif
+
 #ifdef USE_CLI
     cliInit(&masterConfig.serialConfig);
 #endif