mako: update prebuilt kernel [DO NOT MERGE]

7a66d17 sync: signal pt before sync_timeline object gets destroyed
a620018 sync: Fix a race condition between release_obj and print_obj
3a1970b staging: android: ashmem: Avoid deadlock with mmap/shrink

Bug: 13114122
Bug: 11628699
Change-Id: Ifbf0c50c0ca9cb3823918b0be8f3bb5b944a27d1
diff --git a/kernel b/kernel
index 3d5fc34..61295cd 100644
--- a/kernel
+++ b/kernel
Binary files differ