[Ravenwood] Allow Ravenwood to use system-build.prop

To properly initialize default system property values, loading
build.prop built for the current generic build would be closest to what
running tests on a real device could be.

Flag: EXEMPT host test change only
Bug: 292141694
Test: $ANDROID_BUILD_TOP/frameworks/base/ravenwood/scripts/run-ravenwood-tests.sh
Change-Id: If7856266e6fde241db4d3df5b68cb3a626eeaea3
diff --git a/Android.bp b/Android.bp
index 34f9bf0..bd4b40f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -161,10 +161,11 @@
     name: "system-build.prop",
     stem: "build.prop",
     product_config: ":product_config",
-    // Currently, only microdroid and cf system image can refer to system-build.prop
+    // Currently, only microdroid, Ravenwood, and cf system image can refer to system-build.prop
     visibility: [
         "//build/make/target/product/generic",
         "//packages/modules/Virtualization/build/microdroid",
+        "//frameworks/base/ravenwood",
     ],
 }