init.rc: mount pstore fs, set console-ramoops permissions

Change-Id: I44cb00f9123c6044a03de926b6a616da753bb549
diff --git a/rootdir/init.rc b/rootdir/init.rc
index a0a9813..21ebccb 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -136,6 +136,11 @@
 # checker programs.
     mkdir /dev/fscklogs 0770 root system
 
+# pstore/ramoops previous console log
+    mount pstore pstore /sys/fs/pstore
+    chown system log /sys/fs/pstore/console-ramoops
+    chmod 0440 /sys/fs/pstore/console-ramoops
+
 on post-fs
     # once everything is setup, no need to modify /
     mount rootfs rootfs / ro remount