Add support for /odm/overlay

Add support for runtime resource overlay (RRO) APKs in /odm/overlay.

Bug: 121033532
Test: manual (adb push apk to /odm/overlay, reboot, cmd overlay list)
Change-Id: I0918d276dfa6a43054068d3f84ecd0d1639f1d0b
diff --git a/libs/androidfw/AssetManager.cpp b/libs/androidfw/AssetManager.cpp
index 365be10..21609d3 100644
--- a/libs/androidfw/AssetManager.cpp
+++ b/libs/androidfw/AssetManager.cpp
@@ -75,6 +75,7 @@
 const char* AssetManager::VENDOR_OVERLAY_DIR = "/vendor/overlay";
 const char* AssetManager::PRODUCT_OVERLAY_DIR = "/product/overlay";
 const char* AssetManager::PRODUCT_SERVICES_OVERLAY_DIR = "/product_services/overlay";
+const char* AssetManager::ODM_OVERLAY_DIR = "/odm/overlay";
 const char* AssetManager::OVERLAY_THEME_DIR_PROPERTY = "ro.boot.vendor.overlay.theme";
 const char* AssetManager::TARGET_PACKAGE_NAME = "android";
 const char* AssetManager::TARGET_APK_PATH = "/system/framework/framework-res.apk";
diff --git a/libs/androidfw/include/androidfw/AssetManager.h b/libs/androidfw/include/androidfw/AssetManager.h
index e22e2d2..a015eab 100644
--- a/libs/androidfw/include/androidfw/AssetManager.h
+++ b/libs/androidfw/include/androidfw/AssetManager.h
@@ -62,6 +62,7 @@
     static const char* VENDOR_OVERLAY_DIR;
     static const char* PRODUCT_OVERLAY_DIR;
     static const char* PRODUCT_SERVICES_OVERLAY_DIR;
+    static const char* ODM_OVERLAY_DIR;
     /*
      * If OVERLAY_THEME_DIR_PROPERTY is set, search for runtime resource overlay
      * APKs in VENDOR_OVERLAY_DIR/<value of OVERLAY_THEME_DIR_PROPERTY> in