[scripts] build-all-magenta: Replace $* with "$@".

Change-Id: I0356b11d05de836611349d0bb378be10a94fe9f7

scripts/build-all-magenta

@@ -7,4 +7,4 @@
 # https://opensource.org/licenses/MIT
 
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-$DIR/buildall -m $*
+$DIR/buildall -m "$@"