fastbootd: Add sepolicy rule for fastbootd

Add sepolicy to allow fastbootd to access citadel_device

Note:
avc:  denied  { read write } for  pid=526 comm="fastbootd" name="citadel0" dev="tmpfs" ino=18498 scontext=u:r:fastbootd:s0 tcontext=u:object_r:citadel_device:s0 tclass=chr_file permissive=1

Bug: 150929955
Change-Id: I0762c1174d02ebf54f6ba6929265468463e46162
diff --git a/vendor/google/fastbootd.te b/vendor/google/fastbootd.te
index 505f26d..2488ddf 100644
--- a/vendor/google/fastbootd.te
+++ b/vendor/google/fastbootd.te
@@ -6,6 +6,7 @@
 
   allow fastbootd devinfo_block_device:blk_file r_file_perms;
   allow fastbootd sysfs_leds:file w_file_perms;
+  allow fastbootd citadel_device:chr_file rw_file_perms;
   userdebug_or_eng(`
     allow fastbootd firmware_file:dir { remove_name rmdir search write };
     allow fastbootd firmware_file:{ file lnk_file } unlink;