Generate both static and shared libseccomp_policy.

Also switch to Android.bp

Bug: N/A
Test: builds
Change-Id: I33697a40b30d071f8d07aa33e1fb2b0c6e8a9f6d
diff --git a/libc/Android.bp b/libc/Android.bp
index 6aebb3c..1ecef1f 100644
--- a/libc/Android.bp
+++ b/libc/Android.bp
@@ -2155,4 +2155,4 @@
     first_version: "9",
 }
 
-subdirs = ["malloc_debug"]
+subdirs = ["*"]