Add DNG format in MTP

Bug: 25871812
Change-Id: I141d97cb8866edcaa7cab7fe04721e4386832d2b
diff --git a/media/mtp/MtpDebug.cpp b/media/mtp/MtpDebug.cpp
index 9f3037d..1c04bcf 100644
--- a/media/mtp/MtpDebug.cpp
+++ b/media/mtp/MtpDebug.cpp
@@ -101,6 +101,7 @@
     { "MTP_FORMAT_TIFF_IT",                         0x380E },
     { "MTP_FORMAT_JP2",                             0x380F },
     { "MTP_FORMAT_JPX",                             0x3810 },
+    { "MTP_FORMAT_DNG",                             0x3811 },
     { "MTP_FORMAT_UNDEFINED_FIRMWARE",              0xB802 },
     { "MTP_FORMAT_WINDOWS_IMAGE_FORMAT",            0xB881 },
     { "MTP_FORMAT_UNDEFINED_AUDIO",                 0xB900 },