Update kernel to builds 7662978

git log --first-parent -100 --oneline --no-decorate a8f2bcabf9c5..3ce13296e72d:
3ce13296e72d ANDROID: xt_quota2: set usersize in xt_match registration object
8649b02f4e89 ANDROID: xt_quota2: clear quota2_log message before sending
a90abae10a2f ANDROID: xt_quota2: remove trailing junk which might have a digit in it
085ebe864e39 FROMGIT: mac80211_hwsim: add concurrent channels scanning support over virtio
5a38a094c35b UPSTREAM: af_unix: fix garbage collect vs MSG_PEEK

Test: treehugger
Bug: 197471475
Change-Id: I01a83a7bd13010288af945921fcfafed87cfa588