system_dlkm: Allow overlayfs mount for user build

Bug: 200082547
Test: Verification of overlayfs entries with below
      1. adb root && adb remount && adb reboot
      2. adb shell mount | grep system_dlkm
Signed-off-by: Ramji Jiyani <ramjiyani@google.com>
Change-Id: I3fae1fcc6bba81795d6646c10d9fb9552ead8370
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index 8ce961b..960173a 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -2256,7 +2256,8 @@
 #if ALLOW_ADBD_DISABLE_VERITY == 0
     // Allowlist the mount point if user build.
     static const std::vector<const std::string> kAllowedPaths = {
-            "/odm", "/odm_dlkm", "/oem", "/product", "/system_ext", "/vendor", "/vendor_dlkm",
+            "/odm",         "/odm_dlkm",   "/oem",    "/product",
+            "/system_dlkm", "/system_ext", "/vendor", "/vendor_dlkm",
     };
     static const std::vector<const std::string> kAllowedPrefixes = {
             "/mnt/product/",