Pass the bootloader through to AVF in vmlauncher_app

It was being passed through the initrd field before.

Bug: 325930313
Test: m
Change-Id: Id9923d05e12e6bbb3c7775630251fef9df6a910b
diff --git a/vmlauncher_app/java/com/android/virtualization/vmlauncher/MainActivity.java b/vmlauncher_app/java/com/android/virtualization/vmlauncher/MainActivity.java
index 4c42bb4..ec0f8e8 100644
--- a/vmlauncher_app/java/com/android/virtualization/vmlauncher/MainActivity.java
+++ b/vmlauncher_app/java/com/android/virtualization/vmlauncher/MainActivity.java
@@ -91,7 +91,7 @@
                         .forEach(customImageConfigBuilder::addParam);
             }
             if (json.has("bootloader")) {
-                customImageConfigBuilder.setInitrdPath(json.getString("bootloader"));
+                customImageConfigBuilder.setBootloaderPath(json.getString("bootloader"));
             }
             if (json.has("disks")) {
                 JSONArray diskArr = json.getJSONArray("disks");