wahoo: update kernel prebuilt [ DO NOT MERGE ]

6d15b70f9 battery: fix retail mode not working

Linux version 4.4.116-g6d15b70 (android-build@abfarm695) (Android
    clang version 5.0.300080 (based on LLVM 5.0.300080)) #1 SMP
    PREEMPT Thu Aug 2 01:00:42 UTC 2018

Bug: 110489408
Change-Id: I0891c929327378e4a56ca7a691889fc20d8c9e44
Source-Branch: android-msm-wahoo-4.4-pi
Signed-off-by: Petri Gynther <pgynther@google.com>
(cherry picked from commit 434097f9157ce9bb7e667c838eaf0f86b1d4c0ec)
173 files changed