Change extraction tool to vendor_available

Remove the vendor entry in Android.bp and replace it with a
vendor_available=true clause. This will allow OEMs building devices with
a newer system image but older vendor to still incorporate the latest
changes to the tool.

Bug: 253979894
Test: Image builds
Change-Id: I4995ffef26a037fa27514383f8c32c37e1ffe087
diff --git a/provisioner/Android.bp b/provisioner/Android.bp
index 87f39d0..364c0fc 100644
--- a/provisioner/Android.bp
+++ b/provisioner/Android.bp
@@ -87,7 +87,7 @@
 
 cc_binary {
     name: "rkp_factory_extraction_tool",
-    vendor: true,
+    vendor_available: true,
     srcs: ["rkp_factory_extraction_tool.cpp"],
     defaults: [
         "rkp_factory_extraction_defaults",