Access apex sysprops via the generated API

Bug: 125549215
Test: m
Change-Id: Ie9b0aa5eec5931da3512d77613b034e5bd760f3e
diff --git a/init/Android.mk b/init/Android.mk
index 59d7f11..ac05542 100644
--- a/init/Android.mk
+++ b/init/Android.mk
@@ -93,6 +93,7 @@
     libselinux \
     libcap \
     libgsi \
+    libcom.android.sysprop.apex \
 
 LOCAL_SANITIZE := signed-integer-overflow
 # First stage init is weird: it may start without stdout/stderr, and no /proc.