Revert "Revert "cryptfs_hw:move libcryptfs_hw to system_ext""

This reverts commit 78cdf4bb36b1e58da1e54620a3de8311f785f075.

Change-Id: I8945479ebfa464c1d0b9e00748324a077d48b37f
diff --git a/Android.bp b/Android.bp
index 1d8cb4d..4c45819 100644
--- a/Android.bp
+++ b/Android.bp
@@ -21,7 +21,7 @@
     shared_libs: commonSharedLibraries,
 
     owner: "qti",
-    product_specific: true,
+    system_ext_specific: true,
 }
 
 cc_library_headers {