Export init.environ.rc in early-init instead of init

Now that we always have system mounted early, we're starting to load
various daemons during the `init` trigger and these daemons need the
environment set up from init.environ.rc, so we move it to early-init.

This shouldn't need to go any further earlier in the future, since
nothing besides ueventd should ever start in early-init.

Test: systems boot, early daemons get right environment
Change-Id: I02f425a1500377c5de3427afa7872073e77a066f
diff --git a/rootdir/init.environ.rc.in b/rootdir/init.environ.rc.in
index d10f7c1..d5665f2 100644
--- a/rootdir/init.environ.rc.in
+++ b/rootdir/init.environ.rc.in
@@ -1,5 +1,5 @@
 # set up the global environment
-on init
+on early-init
     export ANDROID_BOOTLOGO 1
     export ANDROID_ROOT /system
     export ANDROID_ASSETS /system/app