Move linker config under /linkerconfig

Currently linker config locates under /dev, but this makes some problem
in case of using two system partitions with chroot. To match system
image and configuration, linker config better stays under /linkerconfig

Bug: 144966380
Test: m -j passed && tested from cuttelfish
Change-Id: Iaae5af65721eee8106311c1efb4760a9db13564a
diff --git a/init/selinux.cpp b/init/selinux.cpp
index 2fc8f6d..852d6ca 100644
--- a/init/selinux.cpp
+++ b/init/selinux.cpp
@@ -531,6 +531,8 @@
     selinux_android_restorecon("/dev/device-mapper", 0);
 
     selinux_android_restorecon("/apex", 0);
+
+    selinux_android_restorecon("/linkerconfig", 0);
 }
 
 int SelinuxKlogCallback(int type, const char* fmt, ...) {