mpegts network scan: remove debug printf(), add help for init+idle scan checkboxes

docs/html/config_tvadapters.html

@@ -30,6 +30,12 @@ The rows have the following functions
 <p>
   <dt><b>Networks</b></dt>
   <dd>Associate this device with one or more networks.</dd>
+<p>
+  <dt><b>Init Scan</b></dt>
+  <dd>Allow the initial scan tuning on this device.</dd>
+<p>
+  <dt><b>Idle Scan</b></dt>
+  <dd>Allow the idle scan tuning on this device.</dd>
  <p> 
  <dt><b>Power Save</b></dt>
   <dd>If enabled, allows the tuner to go to sleep when idle.</dd>

src/input/mpegts/mpegts_network_scan.c

@@ -50,7 +50,6 @@ mpegts_network_scan_timer_cb ( void *p )
     assert(mm->mm_scan_state == MM_SCAN_STATE_PEND);
 
     /* Attempt to tune */
-    printf("mm->mm_scan_flags = 0x%x\n", mm->mm_scan_flags);
     r = mpegts_mux_subscribe(mm, "scan", mm->mm_scan_weight, mm->mm_scan_flags);
 
     /* Started */