Move tradeinmode wipe handling to second-stage init.

Bug: 411739129
Test: adb shell tradeinmode testing wipe
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:585dd6e1ea55af0ab43d6667294c7d9d09eb5330)
Merged-In: Ic8b1a86c03389a37ecfcf516c721fff0655cfd6c
Change-Id: Ic8b1a86c03389a37ecfcf516c721fff0655cfd6c
diff --git a/init/Android.bp b/init/Android.bp
index b209c47..ed8123e 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -80,6 +80,7 @@
     "sigchld_handler.cpp",
     "snapuserd_transition.cpp",
     "switch_root.cpp",
+    "tradeinmode.cpp",
     "uevent_listener.cpp",
     "ueventd.cpp",
     "ueventd_parser.cpp",