grouper: update prebuilt kernel

efba26d Proximity: Fix reports status change frequently even when not
moving.
afd49a4 tilapia: arm: xmm: improve log when illegal L2->L0 occurs.
c3931b3 7182768 Hold a wake lock when cable plug in or out.

Change-Id: Ia607b788d4f024b93c641c6c6dd4a72ccfd669fd
diff --git a/kernel b/kernel
index 03cdf00..14d03e8 100644
--- a/kernel
+++ b/kernel
Binary files differ