Refactor runtime hidden API flag from negative to positive

There are only two situations in which we want to enable hidden API
access flag checks. Turning the flag from DISABLE_ to ENABLE_
simplifies logic in ART and reduces the number places where the flag
had to be passed down to ART.

Bug: 64382372
Test: boot device, install and run apps, check log messages
Change-Id: Iae603ff3988057269b3011a4d32bc6031b323653
diff --git a/cmds/installd/otapreopt.cpp b/cmds/installd/otapreopt.cpp
index 72d01a5..f2d1b33 100644
--- a/cmds/installd/otapreopt.cpp
+++ b/cmds/installd/otapreopt.cpp
@@ -79,8 +79,8 @@
 static_assert(DEXOPT_FORCE          == 1 << 6, "DEXOPT_FORCE unexpected.");
 static_assert(DEXOPT_STORAGE_CE     == 1 << 7, "DEXOPT_STORAGE_CE unexpected.");
 static_assert(DEXOPT_STORAGE_DE     == 1 << 8, "DEXOPT_STORAGE_DE unexpected.");
-static_assert(DEXOPT_DISABLE_HIDDEN_API_CHECKS == 1 << 10,
-        "DEXOPT_DISABLE_HIDDEN_API_CHECKS unexpected");
+static_assert(DEXOPT_ENABLE_HIDDEN_API_CHECKS == 1 << 10,
+        "DEXOPT_ENABLE_HIDDEN_API_CHECKS unexpected");
 
 static_assert(DEXOPT_MASK           == 0x5fe, "DEXOPT_MASK unexpected.");