BDA: add a necessary MPEG2 GUID

Taken from access/dshow/
(cherry picked from commit 2deaa69d1ab275538fe7746a10e469040ab743a9)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/access/bda/bdadefs.h

@@ -983,5 +983,7 @@ const GUID KSCATEGORY_BDA_NETWORK_TUNER         =
     {0x71985f48,0x1ca1,0x11d3,{0x9c,0xc8,0x00,0xc0,0x4f,0x79,0x71,0xe0}};
 const GUID KSDATAFORMAT_SUBTYPE_BDA_MPEG2_TRANSPORT =
     {0xF4AEB342,0x0329,0x4fdd,{0xA8,0xFD,0x4A,0xFF,0x49,0x26,0xC9,0x78}};
+const GUID MEDIASUBTYPE_MPEG2_TRANSPORT =
+    {0xe06d8023, 0xdb46, 0x11cf, {0xb4, 0xd1, 0x00, 0x80, 0x5f, 0x6c, 0xbb, 0xea}};
 
 };