vendor: sepolicy and rootdir

-added sysinit and installd sepolicy - from CM
-start sysinit as early as possible

Change-Id: I0948f4b18e8d4ad11426e9d126130ff6acfa6587
diff --git a/sepolicy/installd.te b/sepolicy/installd.te
new file mode 100644
index 0000000..7b32027
--- /dev/null
+++ b/sepolicy/installd.te
@@ -0,0 +1,4 @@
+# Allow querying of asec size on SD card
+allow installd sdcard_external:dir { search };
+allow installd sdcard_external:file { getattr };
+