DO NOT MERGE Dontaudit init to create symlinks in tmpfs.

Address denial:
avc: denied { create } for comm="init" name="sdcard"
scontext=u:r:init:s0 tcontext=u:object_r:tmpfs:s0 tclass=lnk_file
permissive=0

"This symlink was supposed to have been removed in the Gingerbread
time frame, but lives on."
https://android.googlesource.com/platform/system/core/+/d2f0a2c%5E!/
So ignore attempts to create it.

In Android R, this permission is fixed in core policy aosp/943799.

Bug: 132283983
Test: boot device, symlink present
Change-Id: I1eec78c7edea4c84d77635f16c43ee9871683caa