Fix init error trying to access file.

Init tries to write /proc/sys/vm/min_free_order_shift but fails due to
a SELinux denial.  This gives the file a new label and gives init the
ability to write it.

Test: Build and booted Sailfish (a couple of days ago).
Change-Id: Ic93862b85c468afccff2019d84b927af9ed2a84d
diff --git a/private/compat/26.0/26.0.cil b/private/compat/26.0/26.0.cil
index 9d173be..184d18d 100644
--- a/private/compat/26.0/26.0.cil
+++ b/private/compat/26.0/26.0.cil
@@ -466,6 +466,7 @@
     proc_kmsg
     proc_loadavg
     proc_max_map_count
+    proc_min_free_order_shift
     proc_mounts
     proc_page_cluster
     proc_pagetypeinfo
diff --git a/private/genfs_contexts b/private/genfs_contexts
index 76f5bdd..2acaf9f 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -66,6 +66,7 @@
 genfscon proc /sys/vm/page-cluster u:object_r:proc_page_cluster:s0
 genfscon proc /sys/vm/drop_caches u:object_r:proc_drop_caches:s0
 genfscon proc /sys/vm/overcommit_memory u:object_r:proc_overcommit_memory:s0
+genfscon proc /sys/vm/min_free_order_shift u:object_r:proc_min_free_order_shift:s0
 genfscon proc /timer_list u:object_r:proc_timer:s0
 genfscon proc /timer_stats u:object_r:proc_timer:s0
 genfscon proc /tty/drivers u:object_r:proc_tty_drivers:s0