extract_utils: Do not change app SRC if there are arguments

Do not prepend app or priv-app to the src when a path is explicitly
given as an argument. This fixes the SRC path in such conditions.

Change-Id: I43370f17fe224df323fcfa9b0d5eae4ee2996524

build/tools/extract_utils.sh

@@ -249,10 +249,12 @@ function write_packages() {
                 printf 'LOCAL_MULTILIB := %s\n' "$EXTRA"
             fi
         elif [ "$CLASS" = "APPS" ]; then
-            if [ "$EXTRA" = "priv-app" ]; then
-                SRC="$SRC/priv-app"
-            else
-                SRC="$SRC/app"
+            if [ -z "$ARGS" ]; then
+                if [ "$EXTRA" = "priv-app" ]; then
+                    SRC="$SRC/priv-app"
+                else
+                    SRC="$SRC/app"
+                fi
             fi
             printf 'LOCAL_SRC_FILES := %s/%s\n' "$SRC" "$FILE"
             local CERT=platform