Support oem_#### users/groups for host_init_verifier

Bug: 36970783
Test: oem_#### users and groups no longer fail in host_init_verifier
Change-Id: I48174f528994d1b225ed897328cc207bdebf07a8
diff --git a/init/host_init_verifier.cpp b/init/host_init_verifier.cpp
index d6884af..ba8ebfb 100644
--- a/init/host_init_verifier.cpp
+++ b/init/host_init_verifier.cpp
@@ -102,6 +102,14 @@
         }
     }
 
+    unsigned int oem_uid;
+    if (sscanf(login, "oem_%u", &oem_uid) == 1) {
+        snprintf(static_name, sizeof(static_name), "%s", login);
+        static_passwd.pw_uid = oem_uid;
+        static_passwd.pw_gid = oem_uid;
+        return &static_passwd;
+    }
+
     errno = ENOENT;
     return nullptr;
 }