Default copy mbtk_rtpd bin file.

Change-Id: Id616d969269b5999c1b92a432a6644781d34a119
diff --git a/build.sh b/build.sh
index a8fbe05..d38c7d3 100755
--- a/build.sh
+++ b/build.sh
@@ -94,6 +94,7 @@
 	[ -f out/bin/mbtk_version ] && cp -f out/bin/mbtk_version $1/bin
 	[ -f out/bin/mbtk_servicesd ] && cp -f out/bin/mbtk_servicesd $1/bin
 	[ -f out/bin/aboot-tiny ] && cp -f out/bin/aboot-tiny $1/bin
+	[ -f out/bin/mbtk_rtpd ] && cp -f out/bin/mbtk_rtpd $1/bin
 
 
 	# Copy GNSS(5311) bin files.