Firmware dump create directory

Setting up infanstructure for vendor tombstone in dir:
/data/vendor/tombstones

Wifi specific dumps will go into:
/data/vendor/tombstones/wifi

Bug: 70170285
Test: compile, run on device.
Change-Id: Ie16dd8236d9b5df19adb9818b4c62ce01e0d0b10
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 5fa77d8..9145f39 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -461,6 +461,8 @@
     mkdir /data/app 0771 system system
     mkdir /data/property 0700 root root
     mkdir /data/tombstones 0771 system system
+    mkdir /data/vendor/tombstones 0771 root root
+    mkdir /data/vendor/tombstones/wifi 0771 wifi wifi
 
     # create dalvik-cache, so as to enforce our permissions
     mkdir /data/dalvik-cache 0771 root root