grouper: update prebuilt kernel

2a6888f ASoC: codec: rt5640: change lineout route to output mixer and
set path gain to -1.875dB.
e145217 net: wireless: bcmdhd: Report proper mcs rate mask
d979632 arm: tegra: grouper: ti-pmu: set ldo1 as 'always on'
86f2a03 Clear the head of descriptor for the endpoint of gser and acm
port in the unbind function.
9b10ac7 USB: cdc-acm: disconnect stuck issue and acm_tty_open crash

Change-Id: Ia0adf74a795c2a2fbd9a0c4972c2ffa655095ceb
diff --git a/kernel b/kernel
index 59f9cc2..b3e13e1 100644
--- a/kernel
+++ b/kernel
Binary files differ