hilink: resync MSP VTX table after FC restart

package/msposd/0001-wifilink-mspvtx-read-only.patch

@@ -1,5 +1,5 @@
 diff --git a/osd.c b/osd.c
-index a8b756e..49673da 100644
+index a8b756e..ac9adf5 100644
 --- a/osd.c
 +++ b/osd.c
 @@ -190,6 +190,8 @@ extern bool vtxMenuActive;
@@ -11,9 +11,22 @@ index a8b756e..49673da 100644
  extern bool DrawOSD;
  
  // SRT/OSD
-@@ -960,48 +962,25 @@ static void rx_msp_callback(msp_msg_t *msp_message) {
+@@ -959,49 +961,38 @@ static void rx_msp_callback(msp_msg_t *msp_message) {
+ 		break;
  	}
  
++	case MSP_SET_VTX_CONFIG: {
++		// A new FC configuration frame is our lifecycle marker: it occurs after
++		// FC boot and after a Configurator save. Require a fresh short stream of
++		// VTX state frames before re-advertising the read-only table.
++		mspVtxConfigFramesReceived = 0;
++		mspVtxTableResentAfterFcTraffic = false;
++		if (verbose) {
++			printf("mspVTX: FC configuration changed; table sync re-armed\n");
++		}
++		break;
++	}
++
  	case MSP_GET_VTX_CONFIG: {
 -		if (vtxInitDone) {
 +		// The FC publishes its VTX state only after its MSP descriptor is active.