Add riscv64 seccomp policy for mediacodec

Signed-off-by: Mao Han <han_mao@linux.alibaba.com>
Change-Id: I1925066ff03aafb5f92e602a19811f2165c353aa
diff --git a/services/mediacodec/Android.bp b/services/mediacodec/Android.bp
index 4488efb..3222950 100644
--- a/services/mediacodec/Android.bp
+++ b/services/mediacodec/Android.bp
@@ -54,6 +54,9 @@
         arm64: {
             src: "seccomp_policy/mediaswcodec-arm64.policy",
         },
+        riscv64: {
+            src: "seccomp_policy/mediaswcodec-riscv64.policy",
+        },
         x86: {
             src: "seccomp_policy/mediaswcodec-x86.policy",
         },