goldfish: addlow init to access serial_device:chr_file

BUG: 134145307
Change-Id: Iefdd01e7bf4d2ce0872295fac35d9981801e6c2a
diff --git a/sepolicy/common/init.te b/sepolicy/common/init.te
index 9c01f79..40a6328 100644
--- a/sepolicy/common/init.te
+++ b/sepolicy/common/init.te
@@ -1,3 +1,4 @@
 allow init tmpfs:lnk_file create_file_perms;
 allow init proc:dir { mounton };
 dontaudit init kernel:system module_request;
+allow init serial_device:chr_file { ioctl open read write };