vendor: brunch, default to user

Change-Id: I066ae0626432b697bfb62e87c56e31c6721811ec
diff --git a/build/envsetup.sh b/build/envsetup.sh
index 810b9a8..37051e1 100644
--- a/build/envsetup.sh
+++ b/build/envsetup.sh
@@ -40,7 +40,7 @@
         else
             # This is probably just the omni model name
             if [ -z "$variant" ]; then
-                variant="userdebug"
+                variant="user"
             fi
             lunch omni_$target-$variant
         fi