codec2: fix CBR_FD framerate mode hook-up

Bug: 192501770
Change-Id: Icc3b822b64e754f08ebdeb16557612cc1b3ead11
diff --git a/media/codec2/sfplugin/utils/Codec2Mapper.cpp b/media/codec2/sfplugin/utils/Codec2Mapper.cpp
index 00bf84f..4d939fa 100644
--- a/media/codec2/sfplugin/utils/Codec2Mapper.cpp
+++ b/media/codec2/sfplugin/utils/Codec2Mapper.cpp
@@ -92,6 +92,7 @@
 
 ALookup<C2Config::bitrate_mode_t, int32_t> sBitrateModes = {
     { C2Config::BITRATE_CONST,      BITRATE_MODE_CBR },
+    { C2Config::BITRATE_CONST_SKIP_ALLOWED, BITRATE_MODE_CBR_FD },
     { C2Config::BITRATE_VARIABLE,   BITRATE_MODE_VBR },
     { C2Config::BITRATE_IGNORE,     BITRATE_MODE_CQ },
 };