Build sdk variants of libc++ for riscv64 am: ecb2748e58 am: e3095e9358 am: e40f13ac53

Original change: https://android-review.googlesource.com/c/platform/external/libcxxabi/+/2405115

Change-Id: Iadb7a7cc8baa2677e9564143e5700b3604a9e3b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/Android.bp b/Android.bp
index 13951ff..83b2965 100644
--- a/Android.bp
+++ b/Android.bp
@@ -164,6 +164,10 @@
         "//apex_available:anyapex",
     ],
     min_sdk_version: "apex_inherit",
+    // sdk_version normally isn't needed as only the platform variant
+    // is used, except on riscv64 which doesn't have an NDK libc++ and
+    // reuses this module for sdk variants.
+    sdk_version: "current",
 }
 
 cc_fuzz {