Add vendor_init.te

Update sepolicy for vendor_init.  Relevant denials:

avc:  denied  { write } for  pid=558 comm="init" name="debug_suspend"
dev="debugfs" ino=997 scontext=u:r:vendor_init:s0
tcontext=u:object_r:debugfs_clk:s0 tclass=file permissive=1
avc: denied { module_request } for pid=558 comm="init"
kmod="deadline-iosched" scontext=u:r:vendor_init:s0
tcontext=u:r:kernel:s0 tclass=system permissive=1

Bug: 62875318
Test: use walleye + factory reset + vendor_init
Change-Id: I2655316be5fbf18120174a11958c43d7ca70b478
diff --git a/sepolicy/vendor/vendor_init.te b/sepolicy/vendor/vendor_init.te
new file mode 100644
index 0000000..358cf3d
--- /dev/null
+++ b/sepolicy/vendor/vendor_init.te
@@ -0,0 +1,2 @@
+allow vendor_init debugfs_clk:file w_file_perms;
+dontaudit vendor_init kernel:system module_request;