dexopt: Replace -Xhidden-api-checks with -Xhidden-api-policy

Command line flag is changed to enable passing all valid values. Adjust
dexopt accordingly.

Bug: 125701194
Test: compiles, boots, dexopt working
Change-Id: I4807bb0a99ec37a69ca64a3bdbf9a441531bdfb7
diff --git a/cmds/installd/dexopt.cpp b/cmds/installd/dexopt.cpp
index 214c665..7eee749 100644
--- a/cmds/installd/dexopt.cpp
+++ b/cmds/installd/dexopt.cpp
@@ -534,7 +534,7 @@
         }
         AddRuntimeArg(target_sdk_version_arg);
         if (enable_hidden_api_checks) {
-            AddRuntimeArg("-Xhidden-api-checks");
+            AddRuntimeArg("-Xhidden-api-policy:enabled");
         }
 
         if (dex_metadata_fd > -1) {