Fix mp3 for 1806

Change-Id: I456b9943833ccb31e7178e2246cba2445974b3e7
diff --git a/mbtk/Make.defines b/mbtk/Make.defines
index 5cccc36..451a120 100755
--- a/mbtk/Make.defines
+++ b/mbtk/Make.defines
@@ -57,6 +57,7 @@
 	

 ifeq ($(BUILD_PLATFORM), asr1803)

 DEFINE += -DMBTK_POLARSSL_SUPPORT

+DEFINE += -DMBTK_MP3_SUPPORT

 endif

 

 LIB_DIR = \