Enable Kernel log from linkerconfig

LinkerConfig generator runs from early init, so if there is any warning
/ error then logs can be only found from kernel log. To enable kernel
logging from linkerconfig, specific policy should be added.

Test: m -j && Tested from Cuttlefish
Change-Id: I6c49d7693e0334ae8550891b72bcb04e37c16d89
diff --git a/private/linkerconfig.te b/private/linkerconfig.te
index 8acd734..01a9fbf 100644
--- a/private/linkerconfig.te
+++ b/private/linkerconfig.te
@@ -7,4 +7,7 @@
 allow linkerconfig linkerconfig_file:dir rw_dir_perms;
 allow linkerconfig linkerconfig_file:file create_file_perms;
 
+# Allow linkerconfig to log to the kernel.
+allow linkerconfig kmsg_device:chr_file w_file_perms;
+
 neverallow { domain -init -linkerconfig } linkerconfig_exec:file no_x_file_perms;