Disable librs_jni for riscv64

Test: m -k
Change-Id: Idfafb591bc60dc1b7bd22f5aabc80f77a310eb49
diff --git a/rs/jni/Android.bp b/rs/jni/Android.bp
index 9a6fa8e..8a6897c 100644
--- a/rs/jni/Android.bp
+++ b/rs/jni/Android.bp
@@ -51,4 +51,10 @@
         "-Wunreachable-code",
         "-Wno-deprecated-declarations",
     ],
+
+    target: {
+        android_riscv64: {
+            enabled: false,
+        },
+    },
 }