Fix 1806 build error.

Change-Id: I08c1bf4a8184e0dc60273e3113292480599a2772
diff --git a/mbtk/mbtk_lib/Makefile b/mbtk/mbtk_lib/Makefile
index 77502d5..b078162 100755
--- a/mbtk/mbtk_lib/Makefile
+++ b/mbtk/mbtk_lib/Makefile
@@ -5,10 +5,15 @@
 
 INC_DIR += \
 	-I$(LOCAL_PATH)/inc
-	
+
 LIB_DIR +=
 
-LIBS += -llog -lubus -lubox -lprop2uci -luci -lrilutil -lpolarssl \
+LIBS += -llog -lubus -lubox -lprop2uci -luci -lrilutil \
+	-lcutils \
+	-laudio-apu
+	
+ifeq ($(BUILD_PLATFORM), asr1803)
+LIBS += -lpolarssl \
 	-lavcodec \
 	-lavdevice \
 	-lavfilter \
@@ -16,9 +21,8 @@
 	-lavutil \
 	-lpostproc \
 	-lswresample \
-	-lswscale \
-	-lcutils \
-	-laudio-apu
+	-lswscale
+endif
 
 CFLAGS += -shared -Wl,-shared,-Bsymbolic