Add linker config generator and output file to sepolicy

Sepolicy for linkerconfig generator and ld.config.txt file from
generator

Bug: 135004088
Test: m -j & tested from device
Change-Id: I2ea7653a33996dde67a84a2e7a0efa660886434a
diff --git a/private/file.te b/private/file.te
index a856792..26b58f4 100644
--- a/private/file.te
+++ b/private/file.te
@@ -20,3 +20,6 @@
 # /data/misc_[ce|de]/rollback : Used by installd to store snapshots
 # of application data.
 type rollback_data_file, file_type, data_file_type, core_data_file_type;
+
+# /dev/linkerconfig(/.*)?
+type linkerconfig_file, file_type;