Support ICU on Ravenwood (ravenwood-runtime)

See external/icu/README-ravenwood.md for the details.

Bug: 340889954
Test: atest CtsIcuTestCasesRavenwood-core-only
Test: atest CtsIcuTestCases
Flag: EXEMPT host test change only

Change-Id: I61f221c99882c7112501f05c8c76de017d5bdd4e
diff --git a/ravenwood/Android.bp b/ravenwood/Android.bp
index 33d3624..25a0b45 100644
--- a/ravenwood/Android.bp
+++ b/ravenwood/Android.bp
@@ -227,6 +227,11 @@
         "services.core.ravenwood-jarjar",
         "services.fakes.ravenwood-jarjar",
 
+        // ICU
+        "core-icu4j-for-host.ravenwood",
+        "icu4j-icudata-jarjar",
+        "icu4j-icutzdata-jarjar",
+
         // Provide runtime versions of utils linked in below
         "junit",
         "truth",