Track kdevtmpfs /dev denial in bug_map

avc: denied { create } for name="loop8" scontext=u:r:kernel:s0
tcontext=u:object_r:device:s0 tclass=blk_file permissive=0

Bug: 130468851
Test: n/a
Change-Id: I90f1538187ca046a3b9efbe6adb2a26674829eb6
Merged-In: I90f1538187ca046a3b9efbe6adb2a26674829eb6
(cherry picked from commit 211b5c4d070c5514458951a41a3016333e431a99)