Make cnctrk visible to rotctl

After all these years one would think I would remember to read the
directions for all the steps involved.  Ummm, nope!

cnctrk is now visible to rotctl.

cnctrk/cnctrk.c

@@ -83,7 +83,7 @@ const struct rot_caps cnctrk_rot_caps = {
 
 DECLARE_INITROT_BACKEND(cnctrk)
 {
-	rig_debug(RIG_DEBUG_VERBOSE, "%s called\n", __func__);
+	rig_debug(RIG_DEBUG_VERBOSE, "cnctrk: _init called\n");
 
 	rot_register(&cnctrk_rot_caps);
 

src/rot_reg.c

@@ -74,6 +74,7 @@ DEFINE_INITROT_BACKEND(amsat);
 DEFINE_INITROT_BACKEND(ts7400);
 DEFINE_INITROT_BACKEND(celestron);
 DEFINE_INITROT_BACKEND(ether6);
+DEFINE_INITROT_BACKEND(cnctrk);
 
 /*! \def ROT_BACKEND_LIST
  *  \brief Static list of rotator models.
@@ -106,6 +107,7 @@ static struct {
         { ROT_TS7400, ROT_BACKEND_TS7400, ROT_FUNCNAMA(ts7400) },
         { ROT_CELESTRON, ROT_BACKEND_CELESTRON, ROT_FUNCNAMA(celestron) },
         { ROT_ETHER6, ROT_BACKEND_ETHER6, ROT_FUNCNAMA(ether6) },
+        { ROT_CNCTRK, ROT_BACKEND_CNCTRK, ROT_FUNCNAMA(cnctrk) },
         { 0, NULL }, /* end */
 };