Fix UPnP for Sony BluRay players

Set DLNA.ORG_PN=MPEG_TS_SD_NA_ISO for video/mpeg, which allows Sony Blu-Ray
players to see recordings.

This doesn't seem to be likely to break other UPnP clients, but as usual, 
our UPnP Mediaserver support is kinda like black magic not having the DLNA
spec, and is based primarily on user trial and error and observations.

Fixes #9446

Signed-off-by: Gavin Hurlbut <ghurlbut@mythtv.org>

mythtv/programs/mythbackend/upnpcdstv.cpp

@@ -405,6 +405,13 @@ void UPnpCDSTv::AddItem( const UPnpCDSRequest    *pRequest,
     QString sURI      = QString( "%1GetRecording%2").arg( sURIBase   )
                                                     .arg( sURIParams );
 
+    // Sony BDPS370 requires a DLNA Profile Name
+    // FIXME: detection to determine the correct DLNA Profile Name
+    if (sMimeType == "video/mpeg")
+    {
+        sProtocol += ";DLNA.ORG_PN=MPEG_TS_SD_NA_ISO";
+    }
+
     Resource *pRes = pItem->AddResource( sProtocol, sURI );
 
     uint uiStart = dtProgStart.toTime_t();